pinecone/core-2020-05-10-deduplication huggingface dataset:
W plus two jets from a quasi-inert Higgs doublet

We show that, the result recently reported by the CDF collaboration showing
an excess in the invariant mass distribution of jet pairs produced in
association with a W-boson can be explained by a simple extension of the
Standard Model (SM) with an additional quasi-inert Higgs doublet. The two
additional neutral Higgs states H^0 and A^0 have a mass of about 150 GeV and
decay into a pair of jets. W^\pm H^0/A^0 pairs are produced from the decay of
the heavier charged Higgs boson H^\pm. Depending on the precise masses of the
neutral and charged Higgs bosons, the model is shown to be in agreement with
constraints from electroweak precision tests and from flavor physics for a
broad range of the Standard Model-like Higgs mass from 100 GeV to several
hundreds of GeV. Other possible signals of this model at the Tevatron and the
LHC are discussed.Comment: 15 pages, 4 figure
Holographic non-perturbative corrections to gauge couplings

We give a direct microscopic derivation of the F-theory background that
corresponds to four D7 branes of type I' theory by taking into account the
D-instanton contributions to the emission of the axio-dilaton field in the
directions transverse to the D7's. The couplings of the axio-dilaton to the
D-instanton moduli modify its classical source terms which are shown to be
proportional to the elements of the D7 brane chiral ring. Solving the bulk
field equations with the non-perturbatively corrected sources yields the full
F-theory background. This solution represents the gravitational dual of the
four-dimensional theory living on a probe D3 brane of type I', namely of the
N=2, Sp(1) SYM theory with Nf=4. Our results provide an explicit microscopic
derivation of the non-perturbative gravitational dual of this theory. They also
explain the recent observation that the exact coupling for this theory can be
entirely reconstructed from its perturbative part plus the knowledge of the
chiral ring on the D7 branes supporting its flavor degrees of freedom.Comment: Latex, 39 pages, 6 figure
Cohomological localization of Chern-Simons theory

We generalize the framework introduced by Kapustin et al. for doing path
integral localization in Chern-Simons theory to work on any Seifert manifold.
This is done by topologically twisting the supersymmetric theory considered by
Kapustin et al., after which the theory takes a cohomological form. We also
consider Wilson loops which wrap the fiber directions and compute their
expectation values. We discuss the relation with other approaches to exact path
integral calculations in Chern-Simons theory.Comment: 36 pages; v2: minor corrections, matches the version published in
  JHE
Higher Curvature Gravity and the Holographic fluid dual to flat spacetime

Recent works have demonstrated that one can construct a (d + 2) dimensional solution of the vacuum Einstein equations that is dual to a (d + 1) dimensional fluid satisfying the incompressible Navier-Stokes equations. In one important example, the fluid lives on a fixed timelike surface in the flat Rindler spacetime associated with an accelerated observer. In this paper, we show that the shear viscosity to entropy density ratio of the fluid takes the universal value 1/4 pi in a wide class of higher curvature generalizations to Einstein gravity. Unlike the fluid dual to asymptotically anti-de Sitter spacetimes, here the choice of gravitational dynamics only affects the second order transport coefficients. We explicitly calculate these in five-dimensional Einstein-Gauss-Bonnet gravity and discuss the implications of our results
Two-loop soft corrections and resummation of the thrust distribution in the dijet region

The thrust distribution in electron-positron annihilation is a classical precision QCD observable. Using renormalization group (RG) evolution in Laplace space, we perform the resummation of logarithmically enhanced corrections in the dijet limit, T → 1 to next-to-next-to-leading logarithmic (NNLL) accuracy. We independently derive the two-loop soft function for the thrust distribution and extract an analytical expression for the NNLL resummation coefficient g 3. Our findings confirm earlier NNLL resummation results for the thrust distribution in soft-collinear effective theory. To combine the resummed expressions with the fixed-order results, we derive the log( R)-matching and R-matching of the NNLL approximation to the fixed-order NNLO distribution
Two real parton contributions to non-singlet kernels for exclusive QCD
  DGLAP evolution

Results for the two real parton differential distributions needed for
implementing a next-to-leading order (NLO) parton shower Monte Carlo are
presented. They are also integrated over the phase space in order to provide
solid numerical control of the MC codes and for the discussion of the
differences between the standard $\bar{MS}$ factorization and Monte Carlo
implementation at the level of inclusive NLO evolution kernels. Presented
results cover the class of non-singlet diagrams entering into NLO kernels. The
classic work of Curci-Furmanski-Pertonzio was used as a guide in the
calculations.Comment: 34 pages, 3 figure
Spinor Helicity and Dual Conformal Symmetry in Ten Dimensions

The spinor helicity formalism in four dimensions has become a very useful
tool both for understanding the structure of amplitudes and also for practical
numerical computation of amplitudes. Recently, there has been some discussion
of an extension of this formalism to higher dimensions. We describe a
particular implementation of the spinor-helicity method in ten dimensions.
Using this tool, we study the tree-level S-matrix of ten dimensional super
Yang-Mills theory, and prove that the theory enjoys a dual conformal symmetry.
Implications for four-dimensional computations are discussed.Comment: 24 pages, 1 figure
Interference effects in medium-induced gluon radiation

As a step towards understanding the in-medium evolution of a hard jet, we
consider the interference pattern for the medium induced gluon radiation
produced by a color singlet quark-antiquark antenna embedded in a QCD medium
with size L. We focus on the typical kinematics for medium-induced gluon
radiation in the BDMPS-Z regime, that is, short formation times \tau_f << L and
relatively large emission angles \theta >>\theta_c = 2/\sqrt{\hat q L^3}, with
\hat q the `jet quenching' parameter. We demonstrate that, for a dipole opening
angle \theta_{q\bar q} larger than \theta_c, the interference between the
medium-induced gluon emissions by the quark and the antiquark is parametrically
suppressed with respect to the corresponding direct emissions. Physically, this
is so since the direct emissions can be delocalized anywhere throughout the
medium and thus yield contributions proportional to L. On the contrary, the
interference occurs only between gluons emitted at very early times, within the
characteristic time scales for quantum and color coherence between the two
emitters, which in this regime are much smaller than L. This implies that, for
\theta_{q\bar q} >> \theta_c, the medium-induced radiation by the dipole is
simply the sum of the two BDMPS-Z spectra individually produced by the quark
and the antiquark, without coherence effects like angular ordering. For
\theta_{q\bar q} << \theta_c, the BDMPS-Z radiation by the dipole vanishes.Comment: 47 pages, 7 figures. Improved physical discussion in Sect. 2. New
  section added (Sect. 6) on possible implications for in-medium jet evolution.
  More references added. Conclusions unchange
Higgs production in CP-violating supersymmetric cascade decays: probing
  the `open hole' at the Large Hadron Collider

A benchmark CP-violating supersymmetric scenario (known as 'CPX-scenario' in
the literature) is studied in the context of the Large Hadron Collider (LHC).
It is shown that the LHC, with low to moderate accumulated luminosity, will be
able to probe the existing `hole' in the $m_{h_1}$-$\tan\beta$ plane, which
cannot be ruled out by the LEP data. We explore the parameter space with
cascade decay of third generation squarks and gluino with CP-violating decay
branching fractions. We propose a multi-channel analysis to probe this
parameter space some of which are background free at an integrated luminosity
of 5-10 fb$^{-1}$. Specially, multi-lepton final states ($3\l,\, 4\l$ and like
sign di-lepton) are almost background free and have $5\sigma$ reach for the
corresponding signals with very early data of LHC for both 14 TeV and 7 TeV
center of mass energy.Comment: 24 pages, 9 figures, references added as in the journal versio
Effective Dark Matter Model: Relic density, CDMS II, Fermi LAT and LHC

The Cryogenic Dark Matter Search recently announced the observation of two
signal events with a 77% confidence level. Although statistically inconclusive,
it is nevertheless suggestive. In this work we present a model-independent
analysis on the implication of a positive signal in dark matter scattering off
nuclei. Assuming the interaction between (scalar, fermion or vector) dark
matter and the standard model induced by unknown new physics at the scale
$\Lambda$, we examine various dimension-6 tree-level induced operators and
constrain them using the current experimental data, e.g. the WMAP data of the
relic abundance, CDMS II direct detection of the spin-independent scattering,
and indirect detection data (Fermi LAT cosmic gamma-ray), etc. Finally, the LHC
reach is also explored
Spontaneous Parity Violation in SUSY Strong Gauge Theory

We suggest simple models of spontaneous parity violation in supersymmetric
strong gauge theory. We focus on left-right symmetric model and investigate
vacuum with spontaneous parity violation. Non-perturbative effects are
calculable in supersymmetric gauge theory, and we suggest two new models. The
first model shows confinement, and the second model has a dual description of
the theory. The left-right symmetry breaking and electroweak symmetry breaking
are simultaneously occurred with the suitable energy scale hierarchy. The
second model also induces spontaneous supersymmetry breaking.Comment: 14 page
Magnetized Domain Walls in the Deconfined Sakai-Sugimoto Model at Finite
  Baryon Density

The magnetized pure pion gradient ($\mathcal{5}\phi$) phase in the deconfined
Sakai-Sugimoto model is explored at zero and finite temperature. We found that
the temperature has very small effects on the phase. The thermodynamical
properties of the phase shows that the excitations behave like a scalar
solitonic free particles. By comparing the free energy of the pion gradient
phase to the competing multiquark-pion gradient (MQ-$\mathcal{5}\phi$) phase,
it becomes apparent that the pure pion gradient is less thermodynamically
preferred than the MQ-$\mathcal{5}\phi$ phase. However, in the parameter space
where the baryonic chemical potential is smaller than the onset value of the
multiquark, the dominating magnetized nuclear matter is the pion gradient
phase.Comment: 20 pages, 9 figure
Direct neutralino searches in the NMSSM with gravitino LSP in the degenerate scenario

In the present work a two-component dark matter model is studied adopting the degenerate scenario in the R-parity conserving NMSSM. The gravitino LSP and the neutralino NLSP are extremely degenerate in mass, avoiding the BBN bounds and obtaining a high reheating temperature for thermal leptogenesis. In this model both gravitino (absolutely stable) and neutralino (quasi-stable) contribute to dark matter, and direct detection searches for neutralino are discussed. Points that survive all the constraints correspond to a singlino-like neutralino
Implications of the CDF t \bar t Forward-Backward Asymmetry for Hard Top
  Physics

The CDF collaboration has recently reported a large deviation from the
standard model of the t \bar t forward-backward asymmetry in the high invariant
mass region. We interpret this measurement as coming from new physics at a
heavy scale Lambda, and perform a model-independent analysis up to
O(1/Lambda^4). A simple formalism to test and constrain models of new physics
is provided. We find that a large asymmetry cannot be accommodated by heavy new
physics that does not interfere with the standard model. We show that a smoking
gun test for the heavy new physics hypothesis is a significant deviation from
the standard model prediction for the t \bar t differential cross section at
large invariant mass. At M_{t\bar t}>1 TeV the cross section is predicted to be
at least twice that of the SM at the Tevatron, and for M_{t\bar t}>1.5 TeV at
least three times larger than the SM at the LHC.Comment: 12 pages, 3 figures. v2: Minor corrections in the text, references
  added. v3: Extended discussion on QCD NLO corrections, added short discussion
  on LHC dijet constraints; matches published versio
A new CP violating observable for the LHC

We study a new type of CP violating observable that arises in three body
decays that are dominated by an intermediate resonance. If two interfering
diagrams exist with different orderings of final state particles, the required
CP-even phase arises due to the different virtualities of the resonance in each
of the two diagrams. This method can be an important tool for accessing new CP
phases at the LHC and future colliders.Comment: 22 pages, v2: discussion of charged particle decays and a few
  references added v3: typos corrected, matches published versio
M-Branes and Metastable States

We study a supersymmetry breaking deformation of the M-theory background
found in arXiv:hep-th/0012011. The supersymmetric solution is a warped product
of R^{2,1} and the 8-dimensional Stenzel space, which is a higher dimensional
generalization of the deformed conifold. At the bottom of the warped throat
there is a 4-sphere threaded by \tilde{M} units of 4-form flux. The dual
(2+1)-dimensional theory has a discrete spectrum of bound states. We add p
anti-M2 branes at a point on the 4-sphere, and show that they blow up into an
M5-brane wrapping a 3-sphere at a fixed azimuthal angle on the 4-sphere. This
supersymmetry breaking state turns out to be metastable for p / \tilde{M} <
0.054. We find a smooth O(3)-symmetric Euclidean bounce solution in the
M5-brane world volume theory that describes the decay of the false vacuum.
Calculation of the Euclidean action shows that the metastable state is
extremely long-lived. We also describe the corresponding metastable states and
their decay in the type IIA background obtained by reduction along one of the
spatial directions of R^{2,1}.Comment: 33 pages, 5 figures; v2 note adde
Holographic Superfluidity in Imbalanced Mixtures

We construct superfluid black hole solutions with two chemical potentials. By
analogy with QCD, the two chemical potentials correspond to the baryon and
isospin symmetries, respectively. We consider two systems: the back-reacted
U(2) Einstein-Yang-Mills theory in 4+1 dimensions and the 9+1-dimensional D3/D7
brane setup with two coincident D7-brane probes. In the D7-brane model, the
identification of baryon and isospin chemical potential is explicit since the
dual field theory is explicitly known. Studying the phase diagram, we find in
both systems a quantum phase transition at a critical ratio of the two chemical
potentials. However the quantum phase transition is different in the two
systems: In the D3/D7 brane setup we always find a second order phase
transition, while in the Einstein-Yang-Mills theory, depending on the strength
of the back-reaction, we obtain a continuous or first order transition. We
expect the continuous quantum phase transition to be BKT-like. We comment on
the origin of this differing behavior in these apparently very similar models
and compare to phenomenological systems.Comment: 33 pages, 10 pdf files in 6 figures, v2: Discussion of D3/D7 setup at
  zero temperature revise
Dark Matter from Minimal Flavor Violation

We consider theories of flavored dark matter, in which the dark matter
particle is part of a multiplet transforming nontrivially under the flavor
group of the Standard Model in a manner consistent with the principle of
Minimal Flavor Violation (MFV). MFV automatically leads to the stability of the
lightest state for a large number of flavor multiplets. If neutral, this
particle is an excellent dark matter candidate. Furthermore, MFV implies
specific patterns of mass splittings among the flavors of dark matter and
governs the structure of the couplings between dark matter and ordinary
particles, leading to a rich and predictive cosmology and phenomenology. We
present an illustrative phenomenological study of an effective theory of a
flavor SU(3)_Q triplet, gauge singlet scalar.Comment: 10 pages, 2 figures; v2: references added, minor changes to collider
  analysis, conclusions unchange
Non-Relativistic Solutions of N=2 Gauged Supergravity

We find infinite families of supersymmetric solutions of four dimensional,
N=2 gauged supergravity with Lifshitz, Schrodinger and also AdS symmetries. We
focus on the canonical example of a single hypermultiplet and a single vector
multiplet and find that the spectrum of solutions depends crucially on whether
the gaugings are electric or magnetic but to a far milder extent on the
strength of the gaugings. For purely electric or purely magnetic gaugings we
generically find Lifshitz solutions, while for a mixed gauging we find
Schrodinger and AdS solutions. For some of the gaugings the theory has a known
lift to string/M-theory thus giving a higher dimensional embedding of our
solutions.Comment: 27 pages, v2 refs added, comments regarding string embeddings
  altered, cleaner discussion of the scaling parameter for Schrodinger
  solutions; v3 published version, refs adde
Gluon Scattering Amplitudes in Finite Temperature Gauge/Gravity
  Dualities

We examine the gluon scattering amplitude in N=4 super Yang-Mills at finite
temperature with nonzero R-charge densities, and in Non-Commutative gauge
theory at finite temperature. The gluon scattering amplitude is defined as a
light-like Wilson loop which lives at the horizon of the T-dual black holes of
the backgrounds we consider. We study in detail a special amplitude, which
corresponds to forward scattering of a low energy gluon off a high energy one.
For this kinematic configuration in the considered backgrounds, we find the
corresponding minimal surface which is directly related to the gluon scattering
amplitude. We find that for increasing the chemical potential or the
non-commutative parameter, the on-shell action corresponding to our Wilson loop
in the T-dual space decreases. For all of our solutions the length of the short
side of the Wilson loop is constrained by an upper bound which depends on the
temperature, the R-charge density and the non-commutative parameter. Due to
this constraint, in the limit of zeroth temperature our approach breaks down
since the upper bound goes to zero, while by keeping the temperature finite and
letting the chemical potential or the non-commutative parameter to approach to
zero the limit is smooth.Comment: 30 pages, 16 figures, minor corrections (plus improved numerical
  computation for the non-commutative case
Three-loop HTL QCD thermodynamics

The hard-thermal-loop perturbation theory (HTLpt) framework is used to
calculate the thermodynamic functions of a quark-gluon plasma to three-loop
order. This is the highest order accessible by finite temperature perturbation
theory applied to a non-Abelian gauge theory before the high-temperature
infrared catastrophe. All ultraviolet divergences are eliminated by
renormalization of the vacuum, the HTL mass parameters, and the strong coupling
constant. After choosing a prescription for the mass parameters, the three-loop
results for the pressure and trace anomaly are found to be in very good
agreement with recent lattice data down to $T \sim 2-3\,T_c$, which are
temperatures accessible by current and forthcoming heavy-ion collision
experiments.Comment: 27 pages, 11 figures; corresponds with published version in JHE
Potential measurement of the weak mixing angle with neutrino-electron
  scattering at low energy

We study the possibility to measure sin^2 theta_W by neutrino-electron
scattering at a value of the momentum transfer Q ~ 30 MeV with a precision of
0.24% which is only a factor three below the one obtained by LEP-I at the
Z-pole. The neutrino source is a proton beam dump providing a clean beam from
muon decay at rest and the detector is a 100 kt scale water Cerenkov detector,
which results in about 20 million signal events.Comment: 5 pages, 5 eps figures, 3 tables. Title changed. Detailed discussion
  on the proposed set-up and the dependence of the expected precision on the
  energy resolution and the exposure added. Conclusions unchanged. To appear in
  JHE
The singlet scalar as FIMP dark matter

The singlet scalar model is a minimal extension of the Standard Model that
can explain the dark matter. We point out that in this model the dark matter
constraint can be satisfied not only in the already considered WIMP regime but
also, for much smaller couplings, in the Feebly Interacting Massive Particle
(FIMP) regime. In it, dark matter particles are slowly produced in the early
Universe but are never abundant enough to reach thermal equilibrium or
annihilate among themselves. This alternative framework is as simple and
predictive as the WIMP scenario but it gives rise to a completely different
dark matter phenomenology. After reviewing the calculation of the dark matter
relic density in the FIMP regime, we study in detail the evolution of the dark
matter abundance in the early Universe and the predicted relic density as a
function of the parameters of the model. A new dark matter compatible region of
the singlet model is identified, featuring couplings of order 10^-11 to 10^-12
for singlet masses in the GeV to TeV range. As a consequence, no signals at
direct or indirect detection experiments are expected. The relevance of this
new viable region for the correct interpretation of recent experimental bounds
is emphasized.Comment: 12 pages, 6 figure
Acceleration-Induced Deconfinement Transitions in de Sitter Spacetime

In this note, we consider confining gauge theories in $D=2,3,4$ defined by
$S^2$ or $T^2$ compactification of higher-dimensional conformal field theories
with gravity duals. We investigate the behavior of these theories on de Sitter
spacetime as a function of the Hubble parameter. We find that in each case, the
de Sitter vacuum state of the field theory (defined by Euclidian continuation
from a sphere) undergoes a deconfinement transition as the Hubble parameter is
increased past a critical value. In each case, the corresponding critical de
Sitter temperature is smaller than the corresponding Minkowski-space
deconfinement temperature by a factor nearly equal to the dimension of the de
Sitter spacetime. The behavior is qualitatively and quantitatively similar to
that for confining theories defined by $S^1$ compactification of CFTs, studied
recently in arXiv:1007.3996.Comment: 25 pages, 7 figure
Exact Large R-charge Correlators in ABJM Theory

We construct a class of operators, given by Schur polynomials, in ABJM
theory. By computing two point functions at finite $N$ we confirm these are
diagonal for this class of operators in the free field limit. We also calculate
exact three and multi point correlators in the zero coupling limit. Finally, we
consider a particular nontrivial background produced by an operator with an
$R$-charge of $O(N^2$. We show that the nonplanar corrections (which can no
longer be neglected, even at large $N$) can be resummed to give a $1/(N+M)$
expansion for correlators computed in this background.Comment: 21 pages, 1 figure, revised version, large N expansion is corrected,
  to appear JHE