Temperature=0.8
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
hep-ph/0402124 | Emmanuel Lipmanov | E. M. Lipmanov | Small Q-D neutrino masses from a generic lepton mass hierarchy | 8 pages, no figures. Revised version. Results unchanged | null | null | null | hep-ph | null | Exponential lepton mass ratios are studied in a low energy phenomenology. In
view of the known data, the mass patterns of the charged leptons and widely
discussed quasi-degenerate neutrinos are related to one another by two
different traits - opposite mass ratios with large versus small exponents, and
probably confor... | [
{
"created": "Wed, 11 Feb 2004 19:37:12 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Mar 2004 16:20:21 GMT",
"version": "v2"
}
] | 2007-05-23 | [
[
"Lipmanov",
"E. M.",
""
]
] | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | A general generic hierarchy equation with two opposite solutions respectively for the charged lepton and neutrino mass ratios is considered. It determines a small upper bound on the Q-D neutrino mass scale, with estimations: m = 0.30 eV at 90% C.L., and m = 0.18 eV at best-fit mass-squared differences. | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | This, in particular, implies a nearly maximal value for $\theta_{13}$, and a relatively low value for $\Delta m^2_{sol}$. In the conventional three-neutrino case, the low values of the atmospheric hierarchy parameter $\Delta m^2_{atm} \sim 10^{-3}$ eV$^2$ and $\theta_{23} \approx \pi/4$ are favoured. | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | This is in agreement with the present solar neutrino data, whereas the KamLAND results indicate a different atmospheric hierarchy. We show that, in the Q-D neutrino scenario, the present solar neutrino data can be reproduced, in principle, by both hierarchies. | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | This parameter is connected with a certain symmetry which is spontaneously broken by neutrino oscillations and may provide a clue to the nature of neutrino masses. The large exponents for lepton masses are interpreted as signs of an underlying gauge group of the leptonic sector of the Standard Model which is broken at... | Exponential lepton mass ratios are studied in a low energy phenomenology. In view of the known data, the mass patterns of the charged leptons and widely discussed quasi-degenerate neutrinos are related to one another by two different traits - opposite mass ratios with large versus small exponents, and probably conforma... | This is in agreement with the present solar neutrino problem, which is compatible with a two-neutrino oscillation pattern. |
hep-ph/0009284 | Luca Silvestrini | L. Silvestrini | epsilon'/epsilon and Rare K Decays in the Standard Model and
Supersymmetry | 6 pages, talk given at the 4th International Conference On Hyperons,
Charm And Beauty Hadrons, 27-30 June 2000, Valencia, Spain | Nucl.Phys.Proc.Suppl. 93 (2001) 247-252 | 10.1016/S0920-5632(00)01112-9 | ROME1-1301/00 | hep-ph | null | After briefly reviewing the status of epsilon'/epsilon in the Standard Model,
I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to
pi^0 nu bar nu and K_L to pi^0 e^+ e^-. While in the simplest case of the MSSM
with Minimal Flavour Violation the main effect is a suppression of these
transiti... | [
{
"created": "Mon, 25 Sep 2000 12:33:31 GMT",
"version": "v1"
}
] | 2009-10-31 | [
[
"Silvestrini",
"L.",
""
]
] | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. While in the simplest case of the MSSM with Minimal Flavour Violation the main effect is a suppression of these transition... | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. | While in the simplest case of the MSSM with Minimal Flavour Violation the main effect is a suppression of these transitions with respect to the Standard Model, large enhancements are possible in more general SUSY models, with interesting correlations among the different processes. | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. I argue that, in the context of SUSY models which can also generate b to s gamma at the observed level, there is a correla... | I argue that, in the context of SUSY models which can also generate b to s gamma at the observed level, there is a correlation between epsilon'/epsilon and K_L to pi^0 nu bar nu, and between K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. The current experimental situation, with epsilon'/epsilon = (17.0 pm 2.1) x 10^(-... | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. I argue that, for a high scale SUSY-breaking mechanism, these are the most sensitive observables to SUSY CP violation. I a... | I argue that, for a high scale SUSY-breaking mechanism, these are the most sensitive observables to SUSY CP violation. I also discuss the implications for the possibility of measuring CP violation in the charm sector, and for the phenomenology of SUSY. | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. I will then discuss a new CP asymmetry in K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-, and how it... | I will then discuss a new CP asymmetry in K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-, and how it is affected by SUSY. | After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-. I argue that, in the context of SUSY models which can also generate b to s gamma and Delta M_K, there is a correlation amo... | I argue that, in the context of SUSY models which can also generate b to s gamma and Delta M_K, there is a correlation among these four observables, such that one can reliably predict the rate for K_L to pi^0 nu bar nu, given a measurement of epsilon'/epsilon, and also the branching ratios for K^+ to pi^+ nu bar nu an... |
hep-ph/0703107 | Yukihiro Mimura | Ilia Gogoladze, Chin-Aik Lee, Yukihiro Mimura and Qaisar Shafi | Yukawa Couplings in a Model with Gauge, Higgs and Matter Unification | 12 pages | Phys.Lett.B649:212-217,2007 | 10.1016/j.physletb.2007.03.042 | MIFP-07-07 | hep-ph | null | We discuss how unification of the gauge, Higgs and (three chiral family)
matter superfields can be realized from the compactification of a six
dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3.
The bulk gauge interaction includes Yukawa interactions to generate masses for
quarks and lepton... | [
{
"created": "Fri, 9 Mar 2007 20:46:32 GMT",
"version": "v1"
}
] | 2008-11-26 | [
[
"Gogoladze",
"Ilia",
""
],
[
"Lee",
"Chin-Aik",
""
],
[
"Mimura",
"Yukihiro",
""
],
[
"Shafi",
"Qaisar",
""
]
] | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | To overcome this we introduce brane fields which are vector-like under the standard model gauge symmetry, and so do not alter the number of chiral families. In such a setup, the observed fermion masses and mixings can be realized by taking into account suppression effects from the effective Wilson line couplings and la... | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | To overcome this problem, we introduce a set of SU(8) singlet chiral superfields which can be assigned to the boundary of the extra space-time. The corresponding Yukawa couplings in the effective four dimensional theory are found to be of the same form as the standard model Yukawa couplings. | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | To overcome this problem, we introduce a new mechanism based on a six dimensional supersymmetric SO(16) gauge theory over the orbifold R^4 x T^2/Z_4. | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | We show how to modify the model to allow for phenomenologically acceptable Yukawa matrices and still preserve the unification of the gauge, Higgs and matter fields. The modification involves the introduction of a single superfield in the bulk, with no anomaly, which transforms as a nontrivial representation of SU(8) i... | We discuss how unification of the gauge, Higgs and (three chiral family) matter superfields can be realized from the compactification of a six dimensional supersymmetric SU(8) gauge theory over the orbifold R^4 x T^2/Z_3. The bulk gauge interaction includes Yukawa interactions to generate masses for quarks and leptons ... | We also show that the orbifold parity which makes the theory anomaly free is not preserved by the vacuum configuration of the Higgs superfields. As a result, all the fermions obtain masses and do not have conserved KK-parity. |
1402.0607 | Thomas Rehagen | Thomas Rehagen and Graciela B. Gelmini | Effects of kination and scalar-tensor cosmologies on sterile neutrinos | 16 pages, 11 figures; v2: section on general constraints on H added,
text and figures improved, 1 figure added, accepted for publication in JCAP | null | 10.1088/1475-7516/2014/06/044 | null | hep-ph astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the effects of kination and scalar-tensor pre-Big Bang
Nucleosynthesis cosmologies on the non-resonant production of sterile
neutrinos. We show that if the peak of the production rate of sterile neutrinos
occurs during the non-standard cosmological phase, the relic number density of
sterile neutrinos could b... | [
{
"created": "Tue, 4 Feb 2014 03:37:08 GMT",
"version": "v1"
},
{
"created": "Thu, 19 Jun 2014 18:03:56 GMT",
"version": "v2"
}
] | 2015-06-18 | [
[
"Rehagen",
"Thomas",
""
],
[
"Gelmini",
"Graciela B.",
""
]
] | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | Consequently, current bounds on active-sterile neutrino mixing derived from the relic energy density of sterile neutrinos could be greatly relaxed. In particular, we show that the sterile neutrinos which could explain the anomalies found in short-baseline neutrino experiments are compatible with recent joint Planck upp... | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | This could help in reconciling the low value of the active-sterile neutrino mixing angle, required by the 7Be solar neutrino flux measured by the Borexino experiment, with the value allowed by the non-observation of sterile neutrino oscillations in short-baseline experiments. | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | This could help to resolve the over-production problem of sterile neutrinos in cosmologies based on standard General Relativity. | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | This could help explaining the observed shortfalls of both the solar and the cosmological neutrino anomalies in the context of the Dodelson-Widrow mechanism. In particular, we show that in the case of the kination phase, the sterile neutrino production rate is suppressed by a factor $\sim 10^{-6}$ with respect to the ... | We study the effects of kination and scalar-tensor pre-Big Bang Nucleosynthesis cosmologies on the non-resonant production of sterile neutrinos. We show that if the peak of the production rate of sterile neutrinos occurs during the non-standard cosmological phase, the relic number density of sterile neutrinos could be ... | This could help to resolve the $3.5\sigma$ tension between the observed CMB effective number of relativistic species, $N_{\rm eff}$, and the standard cosmology prediction. In the case of kination cosmology, the parameter space of sterile neutrinos that could explain the anomalous $^8$B solar neutrino flux is found to ... |
1803.06785 | Xin-Nian Wang | Tan Luo (CCNU), Shanshan Cao (Wayne State Univ), Yayun He (CCNU and
LBNL) and Xin-Nian Wang (CCNU and LBNL) | Multiple jets and $\gamma$-jet correlation in high-energy heavy-ion
collisions | 11 pages with 12 figures, revised version includes discussions on the
background subtraction and different definitions of jet profile | null | 10.1016/j.physletb.2018.06.025 | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | $\gamma$-jet production is considered one of the best probes of the hot
quark-gluon plasma in high-energy heavy-ion collisions since the direct
$\gamma$ can be used to gauge the initial energy and momentum of the associated
jet. This is investigated within the Linear Boltzmann Transport (LBT) model for
jet propagatio... | [
{
"created": "Mon, 19 Mar 2018 02:27:03 GMT",
"version": "v1"
},
{
"created": "Wed, 11 Apr 2018 09:51:13 GMT",
"version": "v2"
}
] | 2018-06-20 | [
[
"Luo",
"Tan",
"",
"CCNU"
],
[
"Cao",
"Shanshan",
"",
"Wayne State Univ"
],
[
"He",
"Yayun",
"",
"CCNU and\n LBNL"
],
[
"Wang",
"Xin-Nian",
"",
"CCNU and LBNL"
]
] | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | Jet medium interaction not only suppresses the leading jet at large $p_T^{\rm jet}$ but also sub-leading jets at large azimuthal angle. This effectively leads to the narrowing of $\gamma$-jet correlation in azimuthal angle instead of broadening due to jet-medium interaction. The $\gamma$-jet profile on the other hand w... | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | This is due to the contribution from the initial jets, where the contribution from the initial medium excitation is small. On the other hand, the correlation from single jets associated with direct $\gamma$ production dominates at large $p_T^{\rm jet}>p_T^\gamma$ and small azimuthal angle. The contribution from the in... | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | The number of jets associated with $\gamma$ increases with collision centrality. The total inclusive jet induced energy loss is found to scale linearly with the energy of the associated jet, which is the dominant factor in $\gamma$-jet correlation. The linear growth is due to jet-induced gluon production in the plasma... | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | The $\gamma$-jet correlation at small $p_T^{\rm jet}$ is dominated by the effect of the energy loss of the jet associated with $\gamma$ production, while the jet-medium interaction effects from the associated jet and multiple jets play the dominant role at large $p_T^{\rm jet}$. These effects are found to be sensitive... | $\gamma$-jet production is considered one of the best probes of the hot quark-gluon plasma in high-energy heavy-ion collisions since the direct $\gamma$ can be used to gauge the initial energy and momentum of the associated jet. This is investigated within the Linear Boltzmann Transport (LBT) model for jet propagation ... | The $\gamma$-jet correlation at small $p_T^{\rm jet}$ is sensitive to the modification of the jet fragmentation function in the medium. The $\gamma$-jet correlation at large azimuthal angle is sensitive to the medium response to the jet. The jet-induced medium response in the LBT model is found to be weak and to play ... |
hep-ph/0304185 | Taekoon Lee | Taekoon Lee | Heavy quark mass determination from the quarkonium ground state energy:
a pole mass approach | 16 pages; published version | JHEP0310:044,2003 | 10.1088/1126-6708/2003/10/044 | null | hep-ph | null | The heavy quark pole mass in perturbation theory suffers from a renormalon
caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental
difficulty of determining the pole mass to an accuracy better than the inherent
uncertainty can be overcome by direct resummation of the first infrared
renormalon. We sho... | [
{
"created": "Sun, 20 Apr 2003 04:34:57 GMT",
"version": "v1"
},
{
"created": "Wed, 22 Oct 2003 09:27:48 GMT",
"version": "v2"
},
{
"created": "Wed, 5 Nov 2003 06:15:56 GMT",
"version": "v3"
}
] | 2009-11-10 | [
[
"Lee",
"Taekoon",
""
]
] | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. We show ... | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. | We show how a properly defined pole mass as well as the $\bar {\rm MS}$ mass for the top and bottom quarks can be determined accurately from the $O(m\alpha_s^5)$ quarkonium ground state energy. | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. This all... | This allows one to obtain the pole mass to a high accuracy and to all orders in the strong coupling constant. We demonstrate the resummation procedure for the pole mass of the charm quark in QCD and obtain the first three coefficients of the resummed expression. The resummation of the infrared renormalon is important ... | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. This all... | This allows one to construct a finite and well-defined, unambiguous, and infrared safe representation for the heavy quark pole mass. As a by-product, the relation between the first infrared renormalon of the heavy quark pole mass and the first renormalon of the heavy quark potential is derived. | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. This all... | This allows one to construct a scheme-independent series in $M_{\rm pole}^2/\mu^2$ for the pole mass, where $\mu$ is an arbitrary hard scale. The construction of this series is not unique, and the ambiguity is characterized by a single parameter $a$, whose value is constrained by the requirement that the series should... | The heavy quark pole mass in perturbation theory suffers from a renormalon caused, inherent uncertainty of $O(\Lambda_{\rm QCD})$. This fundamental difficulty of determining the pole mass to an accuracy better than the inherent uncertainty can be overcome by direct resummation of the first infrared renormalon. This all... | This allows one to construct a scheme invariant, non-perturbative, pole mass which is not plagued by the renormalon ambiguity. The resummed pole mass is defined by a non-power series, which in principle is calculable in perturbation theory. The first few terms of this series are shown to be identical to the known pert... |
1702.05239 | Peter Hintz | Peter Hintz | Uniqueness of Kerr-Newman-de Sitter black holes with small angular
momenta | 10 pages, 1 figure. v2 is the published version, with updated
bibliography | Ann. Henri Poincare, 19(2):607-617, 2018 | 10.1007/s00023-017-0633-7 | null | gr-qc math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that a stationary solution of the Einstein-Maxwell equations which is
close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact
equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the
non-linear stability of the Kerr-Newman-de Sitter family of black holes for
small ang... | [
{
"created": "Fri, 17 Feb 2017 07:02:54 GMT",
"version": "v1"
},
{
"created": "Wed, 27 May 2020 15:28:39 GMT",
"version": "v2"
}
] | 2020-05-28 | [
[
"Hintz",
"Peter",
""
]
] | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | Our black hole uniqueness result only requires the solution to have high but finite regularity; in particular, we do not make any analyticity assumptions. | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | The proof also applies to other black hole families, in particular, to the Reissner-Nordstr\"om family for small charge, and to the non-degenerate Kerr-Newman family for small angular momentum. | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | The result provides the first example of a non-linear stability result for asymptotically locally anti-de Sitter spacetimes, and it can be regarded as a non-linear generalization of a linear stability result by Whiting. The extension argument is used to establish a similar result for the Kerr-CFT conjecture. | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | The proof also applies to other situations, such as the non-linear stability of Reissner-Nordstr\"om-de Sitter solutions for small masses and non-degeneracy of Reissner-Nordstr\"om-de Sitter solutions.
AMS 2010 Mathematics Subject Classification. 83C57, 83C75, 58J45, 53C21.
Keywords. Kerr-Newman-de Sitter black hole... | We show that a stationary solution of the Einstein-Maxwell equations which is close to a non-degenerate Reissner-Nordstr\"om-de Sitter solution is in fact equal to a slowly rotating Kerr-Newman-de Sitter solution. The proof uses the non-linear stability of the Kerr-Newman-de Sitter family of black holes for small angul... | The proof also applies to other non-extremal black holes, such as the rotating Ba\~nados-Teitelboim-Zanelli black holes. |
2312.08045 | Karim Thebault | Antonis Antoniou and Karim P. Y. Th\'ebault | Theories Without Models: Uncontrolled Idealizations in Particle Physics | null | null | null | null | hep-ph hep-th physics.hist-ph | http://creativecommons.org/licenses/by/4.0/ | The perturbative treatment of realistic quantum field theories, such as
quantum electrodynamics, requires the use of mathematical idealizations in the
approximation series for scattering amplitudes. Such mathematical idealisations
are necessary to derive empirically relevant models from the theory.
Mathematical ideal... | [
{
"created": "Wed, 13 Dec 2023 10:54:56 GMT",
"version": "v1"
}
] | 2023-12-14 | [
[
"Antoniou",
"Antonis",
""
],
[
"Thébault",
"Karim P. Y.",
""
]
] | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | Drawing upon negative formal results in asymptotic analysis (failure of Borel summability) and renormalization group theory (failure of asymptotic safety), we argue that the mathematical idealizations applied in perturbative quantum electrodynamics should be understood as uncontrolled. This, in turn, leads to the probl... | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | For this reason, it is necessary to distinguish between controlled and uncontrolled idealizations in order to determine the validity domain of scattering amplitudes. In this work, we investigate the possibility that the Feynman diagrams of quantum electrodynamics are controlled idealizations. This is important since t... | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | Uncontrolled idealizations may lead to meaningless results, even if the original theory is internally consistent. The paper will argue that the introduction of pointlike charges and currents in the theory of quantum electrodynamics is an example of an uncontrolled idealisation. This idealisation is uncontrolled in the... | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | For controlled idealizations, the effects of the idealization can be calculated in terms of a small expansion parameter. However, in some cases, controlled idealizations are not sufficient to obtain an approximation series with a small expansion parameter. Uncontrolled idealizations are necessary in such cases. Uncont... | The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealisations are necessary to derive empirically relevant models from the theory. Mathematical idealiz... | For controlled mathematical idealizations, the idealization is a mathematical simplification that can be interpreted as a limit of the idealized theory to the realistic theory. For uncontrolled mathematical idealizations, the idealization is a mathematical model for the realistic theory. This article introduces and cl... |
1811.12401 | Michele Levi | Michele Levi | A public framework for Feynman calculations and post-Newtonian gravity | 9 pages, 1 figure | Proceedings of the MG15 Meeting on General Relativity 2018 (2022)
990 | 10.1142/9789811258251_0137 | null | gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report here on a line of work that has played a key role in formally
establishing and going beyond the state of the art in the effective field
theory (EFT) approach and in post-Newtonian (PN) gravity. We also outline here
how this comprehensive framework in fact forms the outset of a prospective rich
research prog... | [
{
"created": "Thu, 29 Nov 2018 18:59:44 GMT",
"version": "v1"
},
{
"created": "Mon, 14 Jan 2019 15:43:40 GMT",
"version": "v2"
}
] | 2022-07-15 | [
[
"Levi",
"Michele",
""
]
] | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. We also outline here how this comprehensive framework in fact forms the outset of a prospective rich research progra... | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. | We also outline here how this comprehensive framework in fact forms the outset of a prospective rich research program, building on the public Feynman and PN technology developed. | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. We have used this work to develop a new approach to the construction of the EFT that is more systematic and more pow... | We have used this work to develop a new approach to the construction of the EFT that is more systematic and more powerful than what has been used in the past, and that has many applications in the context of general relativity and other theories of gravity. In particular, it has allowed us to derive, for the first tim... | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. We review the structure of EFT, and in particular, of the EFT of gravitating point particles, which is the foundatio... | We review the structure of EFT, and in particular, of the EFT of gravitating point particles, which is the foundation of the modern PN approach. We focus on the diagrammatic expansion of this EFT and on its relation to Feynman diagrams. This expansion is a general and powerful method for extracting the classical limit... | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. We have used the EFT approach to model gravity as a renormalizable quantum field theory in flat spacetime. This appr... | We have used the EFT approach to model gravity as a renormalizable quantum field theory in flat spacetime. This approach is based on a systematic power counting expansion in the Newton constant G _{N}, with the leading order term corresponding to general relativity. The EFT formalism provides a natural framework for t... | We report here on a line of work that has played a key role in formally establishing and going beyond the state of the art in the effective field theory (EFT) approach and in post-Newtonian (PN) gravity. We have used the EFT approach to model the gravitational dynamics of point masses at 2PN relative to Newtonian order... | We have used the EFT approach to model the gravitational dynamics of point masses at 2PN relative to Newtonian order, and at the leading post-linear order, for the first time. We have also been able to perform a formal resummation of the classical contributions to the effective Lagrangian, using the renormalization gr... |
hep-ph/0206177 | Aaron Pierce | Hitoshi Murayama and Aaron Pierce | Realistic Dirac Leptogenesis | 4 pages, 1 figure. Uses RevTex. Reference Added. Minor changes in
wording | Phys.Rev.Lett.89:271601,2002 | 10.1103/PhysRevLett.89.271601 | UCB-PTH-02/26, LBNL-50854 | hep-ph | null | We present a model of leptogenesis that preserves lepton number. The model
maintains the important feature of more traditional leptogenesis scenarios: the
decaying particles that provide the CP violation necessary for baryogenesis
also provide the explanation for the smallness of the neutrino Yukawa
couplings. This m... | [
{
"created": "Wed, 19 Jun 2002 23:23:33 GMT",
"version": "v1"
},
{
"created": "Tue, 2 Jul 2002 18:07:58 GMT",
"version": "v2"
}
] | 2009-09-29 | [
[
"Murayama",
"Hitoshi",
""
],
[
"Pierce",
"Aaron",
""
]
] | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. This mod... | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. | This model clearly demonstrates that, contrary to conventional wisdom, neutrinos need not be Majorana in nature in order to help explain the baryon asymmetry of the universe. | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. However,... | However, the CP violation does not arise from the relative phases of the decay amplitudes, but from the interference between the lepton number violating and lepton number conserving amplitudes. This leads to new constraints on the couplings of the decaying particles to the standard model fermions, but does not require... | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. However,... | However, the model is able to do so without generating an unwanted extra U(1) gauge symmetry. The model is based on a non-Abelian discrete symmetry which is anomalous, but not anomalous enough to prevent the generation of a mass for the charged leptons. Lepton number is preserved because it is a free, global symmetry. | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. However,... | However, we do not rely on the decay of heavy neutrinos to create a lepton asymmetry. Instead, we propose a new mechanism for leptogenesis that relies on the presence of heavy charged leptons. The model also includes the necessary ingredients for the seesaw mechanism to provide the masses for the light neutrinos. The ... | We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. However,... | However, the CP violation does not arise from the standard model Yukawa couplings and is not washed out by the sphaleron processes that generate the baryon asymmetry. As a consequence, the model predicts a much lower reheat temperature for the universe, and therefore a suppressed amount of thermal gravitino production... |
hep-ph/9703278 | Konstantin Chetyrkin | K. G. Chetyrkin | Quark Mass Anomalous Dimension to alpha_s**4 | 7 pages, LaTeX; elsart.sty is used (included) | Phys.Lett. B404 (1997) 161-165 | 10.1016/S0370-2693(97)00535-2 | MPI/PhT/96-019 | hep-ph | null | We present the results of analytic calculation of the quark mass anomalous
dimension to alpha_s**4.
| [
{
"created": "Sun, 9 Mar 1997 22:58:28 GMT",
"version": "v1"
}
] | 2009-10-30 | [
[
"Chetyrkin",
"K. G.",
""
]
] | We present the results of analytic calculation of the quark mass anomalous dimension to alpha_s**4. | We present the results of analytic calculation of | the quark mass anomalous dimension to alpha_s**4. | We present the results of analytic calculation of the two-loop contribution of the scalar field to the one-loop effective action in an expanding universe. The exact expression for this contribution is obtained in terms of the Laplacean operator acting on the scalar field and the background scalar curvature. The contrib... | the two-loop contribution of the scalar field to the one-loop effective action in an expanding universe. The exact expression for this contribution is obtained in terms of the Laplacean operator acting on the scalar field and the background scalar curvature. The contribution to the effective action is expressed in ter... | We present the results of analytic calculation of the static potential for a heavy quark-antiquark pair in the N=2 super Yang-Mills theory. The potential is obtained by calculating the 1-loop effective action for the Wilson loop in the presence of the classical solution with unit topological charge. The potential has a... | the static potential for a heavy quark-antiquark pair in the N=2 super Yang-Mills theory. The potential is obtained by calculating the 1-loop effective action for the Wilson loop in the presence of the classical solution with unit topological charge. The potential has a Coulomb behaviour at short distances and is fini... | We present the results of analytic calculation of the two-point correlation function of the field $V$ (the so-called $V$-function) in a homogeneous isotropic Universe in the framework of the $\Lambda$CDM cosmological model. The $\Lambda$CDM model describes the dynamics of the Universe in a wide range of time, from the ... | the two-point correlation function of the field $V$ (the so-called $V$-function) in a homogeneous isotropic Universe in the framework of the $\Lambda$CDM cosmological model. The $\Lambda$CDM model describes the dynamics of the Universe in a wide range of time, from the era of inflation and up to the present epoch. The... | We present the results of analytic calculation of the two-loop radiative corrections to the forward-backward asymmetry in the $Z\to\mu^+\mu^-$ decay in the Standard Model. The complete analytical result for the correction to the asymmetry due to the initial-state radiation is obtained. The initial-state radiative corre... | the two-loop radiative corrections to the forward-backward asymmetry in the $Z\to\mu^+\mu^-$ decay in the Standard Model. The complete analytical result for the correction to the asymmetry due to the initial-state radiation is obtained. The initial-state radiative corrections to the asymmetry are found to be numerical... |
hep-ph/9503493 | German Valencia | G. Valencia (Iowa State University) | Experimental Signatures of a Parity Violating Anomalous Coupling $g_5^Z$ | 10 pages LaTeX, 2 postscript figures, uses epsf Invited talk at the
International Symposium on Vector Boson Self-Interactions, UCLA 1995 | null | 10.1063/1.49301 | ISU-HET-95-2 | hep-ph | null | I discuss the experimental signatures of a parity violating but CP conserving
interaction in the symmetry breaking sector of the electroweak theory.
| [
{
"created": "Sat, 1 Apr 1995 22:09:34 GMT",
"version": "v1"
}
] | 2009-10-28 | [
[
"Valencia",
"G.",
"",
"Iowa State University"
]
] | I discuss the experimental signatures of a parity violating but CP conserving interaction in the symmetry breaking sector of the electroweak theory. | I discuss the experimental signatures of a parity violating but CP | conserving interaction in the symmetry breaking sector of the electroweak theory. | I discuss the experimental signatures of a parity violating but CP conserving phase in the B_s mixing amplitude, which could arise from the gluino penguin in supersymmetric theories. I present a method to measure the CP phase in the B_s mixing amplitude by studying B_d --> J/psi K_S decays. | conserving phase in the B_s mixing amplitude, which could arise from the gluino penguin in supersymmetric theories. I present a method to measure the CP phase in the B_s mixing amplitude by studying B_d --> J/psi K_S decays. | I discuss the experimental signatures of a parity violating but CP invariant violation in the form of the electric dipole moments of charged leptons, and of neutral mesons and atoms. I describe a new class of CP invariant extensions of the standard model that does not suffer from the strong CP problem and can be tested... | invariant violation in the form of the electric dipole moments of charged leptons, and of neutral mesons and atoms. I describe a new class of CP invariant extensions of the standard model that does not suffer from the strong CP problem and can be tested in the next generation of experiments. In particular, I describe ... | I discuss the experimental signatures of a parity violating but CP conserving phase in the Standard Model and its extensions.
* **[16:30-16:45]** **Lecture 5: Higgs boson physics: Higgs to \(\tau\tau\) decay**
* **[16:45-17:00]** **Lecture 6: Higgs boson physics: Higgs to \(\tau\tau\) decay**
* **[17:00-17:15]** **Lect... | conserving phase in the Standard Model and its extensions.
* **[16:30-16:45]** **Lecture 5: Higgs boson physics: Higgs to \(\tau\tau\) decay**
* **[16:45-17:00]** **Lecture 6: Higgs boson physics: Higgs to \(\tau\tau\) decay**
* **[17:00-17:15]** **Lecture 7: Higgs boson physics: Higgs to \(\tau\tau\) decay**
* **[17:... | I discuss the experimental signatures of a parity violating but CP conserving phase in the CKM matrix. These include the CP asymmetry in $B^0_d\to \psi K^0$, $B^0_d\to \pi^+\pi^-$, and $B^0_d\to \pi^0K^0$, as well as the CP asymmetry in $B^0_s\to \phi \phi$ and $B^0_s\to K^+K^-$. The CP asymmetry in $B^0_d\to \psi K^0$... | conserving phase in the CKM matrix. These include the CP asymmetry in $B^0_d\to \psi K^0$, $B^0_d\to \pi^+\pi^-$, and $B^0_d\to \pi^0K^0$, as well as the CP asymmetry in $B^0_s\to \phi \phi$ and $B^0_s\to K^+K^-$. The CP asymmetry in $B^0_d\to \psi K^0$ is very sensitive to this phase, and has not yet been measured. I... |
1605.08976 | Saheb Soroushfar | Saheb Soroushfar, Reza Saffari, Sobhan Kazempour, Saskia Grunau, Jutta
Kunz | Detailed study of geodesics in the Kerr-Newman-(A)dS spactime and the
rotating charged black hole spacetime in $f(R)$ gravity | 35 pages,3 table,24 figures, Accepted for publication in Physical
Review D. arXiv admin note: text overlap with arXiv:1605.08975,
arXiv:1601.03143 | Phys. Rev. D 94, 024052 (2016) | 10.1103/PhysRevD.94.024052 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform a detailed study of the geodesic equations in the spacetime of the
static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS
spacetime. We derive the equations of motion for test particles and light rays
and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and
$\sigma$... | [
{
"created": "Sun, 29 May 2016 08:11:58 GMT",
"version": "v1"
},
{
"created": "Tue, 19 Jul 2016 10:49:04 GMT",
"version": "v2"
}
] | 2016-08-02 | [
[
"Soroushfar",
"Saheb",
""
],
[
"Saffari",
"Reza",
""
],
[
"Kazempour",
"Sobhan",
""
],
[
"Grunau",
"Saskia",
""
],
[
"Kunz",
"Jutta",
""
]
] | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | With the help of parametric diagrams and effective potentials we analyze the geodesic motion and classify the possible orbit types. This spacetime is also a solution of $f(R)$ gravity with a constant curvature scalar. | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | We also present the corresponding solutions in terms of the Jacobi elliptic functions. For massive particles, we obtain the energy and angular momentum of the orbits in terms of the Weierstrass and Kleinian sigma functions as well as the Jacobi elliptic functions. In the limit of large values of the particle's energy,... | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | We also present a complete analysis of the equations of motion and discuss the different classes of solutions. The study of the geodesic equations in this spacetime is relevant for both theoretical and phenomenological applications, especially in the context of the Kerr/CFT correspondence and the effective one-loop qu... | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | We also discuss the problem of finding the turning points of the radial null geodesics as well as the geodesic equation for test particles in the equatorial plane of the black hole. We obtain the analytical solutions for the corresponding equations and find out the physical properties of the motion in this spacetime.
... | We perform a detailed study of the geodesic equations in the spacetime of the static and rotating charged black hole corresponding to the Kerr-Newman-(A)dS spacetime. We derive the equations of motion for test particles and light rays and present their solutions in terms of the Weierstrass $\wp$, $\zeta$ and $\sigma$ f... | We also present the first integrals of the equations of motion, the corresponding conserved quantities and the effective potentials. We discuss the influence of the cosmological constant on the orbital structure of particles and light rays in this spacetime. We discuss the circular motion and derive the radius of the ... |
0909.2460 | Bruce Mellado | T. Han and B. Mellado | Higgs Boson Searches and the Hbbar Coupling at the LHeC | 9 pages, 7 figures | Phys.Rev.D82:016009,2010 | 10.1103/PhysRevD.82.016009 | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Once the existence of the Higgs boson is established at the CERN Large Hadron
Collider (LHC), the focus will be shifted toward understanding its couplings to
other particles. A crucial aspect is the measurement of the bottom Yukawa
coupling, which is challenging at the LHC. In this paper we study the use of
forward j... | [
{
"created": "Mon, 14 Sep 2009 02:06:10 GMT",
"version": "v1"
}
] | 2014-11-20 | [
[
"Han",
"T.",
""
],
[
"Mellado",
"B.",
""
]
] | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | We demonstrate that the requirement of forward jet tagging in charged current events strongly enhances the signal-to-background ratio. The impact of a veto on additional partons is also discussed. Excellent response to hadronic shower and b-tagging capabilities are pivotal detector performance aspects. | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | We present a feasibility study for the Large Area Soft Lepton Spectrometer (LASH), a detector concept to perform forward particle detection at the LHC. We demonstrate that this method can be used to probe the bottom Yukawa coupling with a precision at the 10% level, while the Standard Model Higgs coupling to vector bo... | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | The potential of forward jet tagging is investigated using the QCD and Monte Carlo generators DIRE and QCDPOM. We find that forward jets, even when accompanied by a single hard gluon, can be used to tag Higgs events at the LHC with a purity of about 50%. | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | The potential of forward jet tagging was studied using PYTHIA8 Monte Carlo studies for various Higgs boson masses. We find that forward jet tagging can significantly improve the signal purity of the Higgs boson signal in the H to bbar decay mode. A signal to background ratio of 1.3 can be achieved at the 95% confidenc... | Once the existence of the Higgs boson is established at the CERN Large Hadron Collider (LHC), the focus will be shifted toward understanding its couplings to other particles. A crucial aspect is the measurement of the bottom Yukawa coupling, which is challenging at the LHC. In this paper we study the use of forward jet... | We present results for the measurement of the Higgs boson bottom Yukawa coupling in the H to bbar decay mode at the LHC, using a forward jet tagger for the bbar jet reconstruction, and assuming realistic Higgs production cross sections from gluon-gluon fusion. The sensitivity of the coupling measurement is studied for... |
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