pinecone/core-2020-05-10-deduplication huggingface dataset:
S-wave Kpi scattering in chiral perturbation theory with resonances

We present a detailed analysis of S-wave Kpi scattering up to 2 GeV, making
use of the resonance chiral Lagrangian predictions together with a suitable
unitarisation method. Our approach incorporates known theoretical constraints
at low and high energies. The present experimental status, with partly
conflicting data from different experiments, is discussed. Our analysis allows
to resolve some experimental ambiguities, but better data are needed in order
to determine the cross-section in the higher-energy range. Our best fits are
used to determine the masses and widths of the relevant scalar resonances in
this energy region.Comment: 40 pages, 6 figure
Adiabatic and isocurvature fluctuations of Affleck-Dine field in D-term
  inflation model

We reconsider fluctuations of Affleck-Dine (AD) field in a D-term inflation
model. Contrary to the previous analysis, we find that the spectrum of the
adiabatic fluctuations is almost scale invariant even if the AD field has a
large initial value. Furthermore, we study the isocurvature fluctuations of the
AD field and estimate the ratio of the isocurvature to adiabatic power
spectrum. The dynamics of the inflaton and AD fields sets the upper bound for
the value of the AD field, leading to a lower limit for isocurvature
perturbation. It is shown that the recent Cosmic Microwave Background data give
a constraint on the D-term inflation and the AD field.Comment: 11pages,2figures;to appear in Phys. Lett.
On the Day-Night Effect and CC to NC Event Rate Ratio Predictions for
  the SNO Detector

Detailed predictions for the D-N asymmetry for the Super-Kamiokande and SNO
experiments, as well as for the ratio of the CC and NC event rates measured by
SNO, in the cases of the LMA MSW and of the LOW solutions of the solar neutrino
problem, are derived. The possibilities to further constrain the regions of the
LMA MSW and LOW solutions of the solar neutrino problem by using the
forthcoming SNO data on the D-N asymmetry and on the CC to NC event rate ratio
are also discussed.Comment: 16 pages, LATEX; 10 pages of text, 12 eps-files; the text includes 6
  figures; results and conclusions unchanged, the iso-(D-N) asymmetry and CC to
  NC event rate ratio contour plots (Figs. 1 - 6) are given in the \Delta m^2 -
  \tan^2\theta plane, a comment about the uncertainty in the theoretical
  predictions for CC to NC event rate ratio in the absence of solar neutrino
  oscillations and one sub-figure added; contains 3 more figures with respect
  to the version to be published in Physics Letters
Light scalar and vector mesons in the large $N_c$ limit from unitarized
  chiral perturbation theory

We review the large Nc behavior of light scalar and vector resonances
generated from unitarized meson-meson scattering amplitudes at one loop in
Chiral Perturbation Theory. The vectors nicely follow the behavior expected for
qqbar states, whereas scalar mesons do not. This suggests that the main
component of light scalars is not qqbar. We also comment on t-channel vector
exchange as well as on the large Nc behavior of the mass splittings between the
vectors generated from the inverse amplitude method.Comment: Invited talk to the XIth International Conference on Hadron
  Spectroscopy, HADRON05, Rio de Janeiro, 22-26 August 200
Factorization and N^3LL_p+NNLO Predictions for the Higgs Cross Section
  with a Jet Veto

We have recently derived a factorization formula for the Higgs-boson
production cross section in the presence of a jet veto, which allows for a
systematic resummation of large Sudakov logarithms of the form alpha_s^n
ln^m(p_T^veto/m_H), along with the large virtual corrections known to affect
also the total cross section. Here we determine the ingredients entering this
formula at two-loop accuracy. Specifically, we compute the dependence on the
jet-radius parameter R, which is encoded in the two-loop coefficient of the
collinear anomaly, by means of a direct, fully analytic calculation in the
framework of soft-collinear effective theory. We confirm the result obtained by
Banfi et al. from a related calculation in QCD, and demonstrate that
factorization-breaking, soft-collinear mixing effects do not arise at leading
power in p_T^veto/m_H, even for R=O(1). In addition, we extract the two-loop
collinear beam functions numerically. We present detailed numerical predictions
for the jet-veto cross section with partial next-to-next-to-next-to-leading
logarithmic accuracy, matched to the next-to-next-to-leading order cross
section in fixed-order perturbation theory. The only missing ingredients at
this level of accuracy are the three-loop anomaly coefficient and the four-loop
cusp anomalous dimension, whose numerical effects we estimate to be small.Comment: 43 pages, 12 figures; minor changes, references updated; version
  published in JHE
All AdS_7 solutions of type II supergravity

In M-theory, the only AdS_7 supersymmetric solutions are AdS_7 x S^4 and its
orbifolds. In this paper, we find and classify new supersymmetric solutions of
the type AdS_7 x M_3 in type II supergravity. While in IIB none exist, in IIA
with Romans mass (which does not lift to M-theory) there are many new ones. We
use a pure spinor approach reminiscent of generalized complex geometry. Without
the need for any Ansatz, the system determines uniquely the form of the metric
and fluxes, up to solving a system of ODEs. Namely, the metric on M_3 is that
of an S^2 fibered over an interval; this is consistent with the Sp(1)
R-symmetry of the holographically dual (1,0) theory. By including D8 brane
sources, one can numerically obtain regular solutions, where topologically M_3
= S^3.Comment: 45 pages, 4 figures. v2: solution with single D8 added; references
  added; minor correction
Joint Limiting Distribution of Minima and Maxima of Complete and
  Incomplete Samples of Stationary Sequences

In the seminal contribution [4] the joint weak convergence of maxima and
minima of weakly dependent stationary sequences is derived under some mild
asymptotic conditions. In this paper we address additionally the case of
incomplete samples assuming that the average proportion of incompleteness
converges in probability to some random variable. We show the joint weak
convergence of the maxima and minima of both complete and incomplete samples.
It turns out that for special cases, maxima and minima are asymptotically
independent
Correlation Functions of XX0 Heisenberg Chain, q-Binomial Determinants,
  and Random Walks

The XX0 Heisenberg model on a cyclic chain is considered. The representation
of the Bethe wave functions via the Schur functions allows to apply the
well-developed theory of the symmetric functions to the calculation of the
thermal correlation functions. The determinantal expressions of the
form-factors and of the thermal correlation functions are obtained. The
q-binomial determinants enable the connection of the form-factors with the
generating functions both of boxed plane partitions and of self-avoiding
lattice paths. The asymptotical behavior of the thermal correlation functions
is studied in the limit of low temperature provided that the characteristic
parameters of the system are large enough.Comment: 27 pages, 2 figures, LaTe
Challenges of D=6 N=(1,1) SYM Theory

Maximally supersymmetric Yang-Mills theories have several remarkable
properties, among which are the cancellation of UV divergences, factorization
of higher loop corrections and possible integrability. Much attention has been
attracted to the N=4 D=4 SYM theory. The N=(1,1) D=6 SYM theory possesses
similar properties but is nonrenomalizable and serves as a toy model for
supergravity. We consider the on-shell four point scattering amplitude and
analyze its perturbative expansion within the spin-helicity and superspace
formalism. The integrands of the resulting diagrams coincide with those of the
N=4 D=4 SYM and obey the dual conformal invariance. Contrary to 4 dimensions,
no IR divergences on mass shell appear. We calculate analytically the leading
logarithmic asymptotics in all loops. Their summation leads to a Regge
trajectory which is calculated exactly. The leading powers of s are calculated
up to six loops. Their summation is performed numerically and leads to a smooth
function of s. The leading UV divergences are calculated up to 5 loops. The
result suggests the geometrical progression which ends up in a finite
expression. This leads us to a radical point of view on nonrenormalizable
theories.Comment: 11 pages, 2 figures, Late
Minimal unitary representation of 5d superconformal algebra F(4) and
  AdS_6/CFT_5 higher spin (super)-algebras

We study the minimal unitary representation (minrep) of SO(5,2), obtained by
quantization of its geometric quasiconformal action, its deformations and
supersymmetric extensions. The minrep of SO(5,2) describes a massless conformal
scalar field in five dimensions and admits a unique "deformation" which
describes a massless conformal spinor. Scalar and spinor minreps of SO(5,2) are
the 5d analogs of Dirac's singletons of SO(3,2). We then construct the minimal
unitary representation of the unique 5d superconformal algebra F(4) with the
even subalgebra SO(5,2) X SU(2). The minrep of F(4) describes a massless
conformal supermultiplet consisting of two scalar and one spinor fields. We
then extend our results to the construction of higher spin AdS_6/CFT_5
(super)-algebras. The Joseph ideal of the minrep of SO(5,2) vanishes
identically as operators and hence its enveloping algebra yields the
AdS_6/CFT_5 bosonic higher spin algebra directly. The enveloping algebra of the
spinor minrep defines a "deformed" higher spin algebra for which a deformed
Joseph ideal vanishes identically as operators. These results are then extended
to the construction of the unique higher spin AdS_6/CFT_5 superalgebra as the
enveloping algebra of the minimal unitary realization of F(4) obtained by the
quasiconformal methods
Measurement of the analysing power in proton-proton elastic scattering
  at small angles

The proton analysing power in $\vec{p}p$ elastic scattering has been measured
at small angles at COSY-ANKE at 796 MeV and five other beam energies between
1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by
detecting the fast proton in the ANKE forward detector or the slow recoil
proton in a silicon tracking telescope are completely consistent. Although the
analysing power results agree well with the many published data at 796 MeV, and
also with the most recent partial wave solution at this energy, the ANKE data
at the higher energies lie well above the predictions of this solution at small
angles. An updated phase shift analysis that uses the ANKE results together
with the World data leads to a much better description of these new
measurements.Comment: 5 pages, 3 figure
Getting the D-brane effective action from BPS configurations

We review a method to find the non-abelian open superstring effective action,
thereby settling the issue of the ordering ambiguities. We start from solutions
to Yang-Mills which, in D-brane context, define certain BPS configurations.
Studying their deformations in the abelian case shows that the Born-Infeld
action is the unique deformation which admits solutions of this type. By
applying the method to the non-abelian case we calculated the full effective
action through O(\alpha'^3). The presence of derivative terms turns out to be
essential. Testing the result by comparing the spectrum in the presence of a
constant magnetic background field with the string theory prediction, we obtain
perfect agreement.Comment: 6 pages, proceedings of the Corfu 2001 RTN meetin
Constituent quark model calculation for a possible J$^{P}$=0$^{-}$, T=0 dibaryon

There exists experimental evidence that a dibaryon resonance d' with quantum numbers J^P=0^-,T=0 and mass 2065 MeV could be the origin of the narrow peak in the (\pi^+ ,\pi^- ) double charge exchange cross--sections on nuclei. We investigate the six--quark system with these quantum--numbers within the constituent quark model, with linear confinement, effective one--gluon exchange at short range and chiral interactions between quarks (\pi and \sigma exchange). We classify all possible six quark states with J^P=0^-,T=0, and with N=1 and N=3 harmonic oscillator excitations, using different reduction chains. The six--quark Hamiltonian is diagonalized in the basis including the unique N=1 state and the 10 most important states from the N=3 shell. We find, that with most of the possible sets of parameters, the mass of such a "dibaryon" lies above the N(939)+N^\ast(1535) threshold. The only possibility to describe the supposed d'(2065) in the present context is to reduce the confinement strength to very small values, however at the expense of describing the negative parity resonances N^\ast. We also analyze the J^P=0^-,T=2,N=1 six--quark state
Searching for B$_{c}$ mesons in the ATLAS experiment at LHC

We discuss the feasibility of the observation of the signal from B_c mesons in the ATLAS experiment at the LHC. In particular, we address the decay mode B_c{\rightarrow}J/\psi \pi followed by the leptonic decay J/\psi{\rightarrow}\mu^+\mu^-, which should permit an accurate measurement of the B_c mass. We performed a Monte Carlo study of the signal and background concluding that a precision of \approx 1 MeV for the B_c mass could be achieved after one year of running at \lq\lqlow" luminosity. The semileptonic decay B_c{\rightarrow}J/\psi\ {\mu}^+{\nu}_{\mu} is also considered for a possible extraction of {\mid}V_{cb}{\mid}
Integrable Multicomponent Perfect Fluid Multidimensional Cosmology; 2, Scalar Fields

We consider anisotropic cosmological models with an universe of dimension 4 or more, factorized into n>1 Ricci-flat spaces, containing an m-component perfect fluid of m non-interacting homogeneous minimally coupled scalar fields under special conditions. We describe the dynamics of the universe: It has a Kasner-like behaviour near the singularity and isotropizes during the expansion to infinity. Some of the considered models are integrable, and classical as well as quantum solutions are found. Some solutions produce inflation from "nothing". There exist classical asymptotically anti-de Sitter wormholes, and quantum wormholes with discrete spectrum
The generalized Gerasimov-Drell-Hearn sum rule for deuteron
  electrodisintegration

The generalized Gerasimov-Drell-Hearn sum rule $I^{GDH}_{\gamma^*d}(Q^2)$ for
deuteron electrodisintegration $d(e,e')np$ as function of the squared
four-momentum transfer $Q^2$ is evaluated by explicit integration. The
calculation is based on a conventional nonrelativistic framework using a
realistic $NN$-potential and including contributions from meson exchange
currents, isobar configurations and leading order relativistic terms. Good
convergence is achieved. The prominent feature is a deep negative minimum,
$I_{\gamma^* d}^{GDH}=-9.5$ mb, at low $Q^2\approx 0.2$ fm$^{-2}$ which is
almost exclusively driven by the nucleon isovector anomalous magnetic moment
contribution to the magnetic dipole transition to the $^1S_0$-state. Above
$Q^2=20$ fm$^{-2}$ the integral $I^{GDH}_{\gamma^*}(Q^2)$ approaches zero
rapidly.Comment: 6 pages Revtex4, 4 figure
Ground state properties of exotic nuclei near Z=40 in the relativistic
  mean-field theory,

Study of the ground-state properties of Kr, Sr and Zr isotopes has been
performed in the framework of the relativistic mean field (RMF) theory using
the recently proposed relativistic parameter set NL-SH. It is shown that the
RMF theory provides an unified and excellent description of the binding
energies, isotope shifts and deformation properties of nuclei over a large
range of isospin in the Z=40 region. It is observed that the RMF theory with
the force NL-SH is able to describe the anomalous kinks in isotope shifts in Kr
and Sr nuclei, the problem which has hitherto remained unresolved. This is in
contrast with the density-dependent Skyrme Hartree-Fock approach which does not
reproduce the behaviour of the isotope shifts about shell closure. On the Zr
chain we predict that the isotope shifts exhibit a trend similar to that of the
Kr and Sr nuclei. The RMF theory also predicts shape coexistence in heavy Sr
isotopes. Several dramatic shape transitions in the isotopic chains are shown
to be a general feature of nuclei in this region. A comparison of the
properties with the available mass models shows that the results of the RMF
theory are generally in accord with the predictions of the finite-range droplet
model.Comment: 24 pages Latex, 7 figures (available upon request), Nuclear Physics A
  (in press)
Exploiting the Symmetries of P and S wave for B --> K^* mu^+ mu^-

After summarizing the current theoretical status of the four-body decay B -->
K^*(--> K pi) mu^+ mu^-, we apply the formalism of spin-symmetries to the full
angular distribution, including the S-wave part involving a broad scalar
resonance K0^*. While we recover in the P-wave sector the known relation
between the angular observables Pi('), we find in the S-wave sector two new
relations connecting the coefficients of the S-wave angular distribution and
reducing the number of independent S-wave observables from six to four.
Included in the experimental data analysis, these relations can help to reduce
the background from S-wave pollution. We further point out the discriminative
power of the maximum of the angular observable P2 as a charm-loop insensitive
probe of right-handed currents. Moreover, we show that in absence of
right-handed currents the angular observables P4' and P5' fulfill the relation
P4' = beta P5' at the position where P2 reaches its maximum.Comment: 13 pages, 3 figures; journal versio
Understanding space weather to shield society: A global road map for
  2015-2025 commissioned by COSPAR and ILWS

There is a growing appreciation that the environmental conditions that we
call space weather impact the technological infrastructure that powers the
coupled economies around the world. With that comes the need to better shield
society against space weather by improving forecasts, environmental
specifications, and infrastructure design. [...] advanced understanding of
space weather requires a coordinated international approach to effectively
provide awareness of the processes within the Sun-Earth system through
observation-driven models. This roadmap prioritizes the scientific focus areas
and research infrastructure that are needed to significantly advance our
understanding of space weather of all intensities and of its implications for
society. Advancement of the existing system observatory through the addition of
small to moderate state-of-the-art capabilities designed to fill observational
gaps will enable significant advances. Such a strategy requires urgent action:
key instrumentation needs to be sustained, and action needs to be taken before
core capabilities are lost in the aging ensemble. We recommend advances through
priority focus (1) on observation-based modeling throughout the Sun-Earth
system, (2) on forecasts more than 12 hrs ahead of the magnetic structure of
incoming coronal mass ejections, (3) on understanding the geospace response to
variable solar-wind stresses that lead to intense geomagnetically-induced
currents and ionospheric and radiation storms, and (4) on developing a
comprehensive specification of space climate, including the characterization of
extreme space storms to guide resilient and robust engineering of technological
infrastructures. The roadmap clusters its implementation recommendations by
formulating three action pathways, and outlines needed instrumentation and
research programs and infrastructure for each of these. [...]Comment: In press for Advances of Space Research: an international roadmap on
  the science of space weather, commissioned by COSPAR and ILWS (63 pages and 4
  figures
Refining light stop exclusion limits with $W^+W^-$ cross sections

If light supersymmetric top (stop) quarks are produced at the LHC and decay
via on- or off-shell $W$-bosons they can be expected to contribute to a
precision $W^+W^-$ cross section measurement. Using the latest results of the
CMS experiment, we revisit constraints on the stop quark production and find
that this measurement can exclude portions of the parameter space not probed by
dedicated searches. In particular we can exclude light top squarks up to
230~GeV along the line separating three- and four-body decays, $\tilde{t}_1 \to
\tilde{\chi}_1^0 W^{(*)} b$. We also study the exclusion limits in the case
when the branching ratio for these decays is reduced and we show significant
improvement over previously existing limits.Comment: 5 pages, 2 figures; references updated, minor changes; to appear in
  Phys. Lett.
ZZ production at the LHC: fiducial cross sections and distributions in
  NNLO QCD

We consider QCD radiative corrections to the production of four charged
leptons in the ZZ signal region at the LHC. We report on the complete
calculation of the next-to-next-to-leading order (NNLO) corrections to this
process in QCD perturbation theory. Numerical results are presented for
$\sqrt{s}=8$ TeV, using typical selection cuts applied by the ATLAS and CMS
collaborations. The NNLO corrections increase the NLO fiducial cross section by
about $15\%$, and they have a relatively small impact on the shape of the
considered kinematical distributions. In the case of the $\Delta\Phi$
distribution of the two Z candidates, the NNLO corrections improve the
agreement of the theoretical prediction with the CMS data.Comment: 9 pages, 3 figure
A Liouville-type theorem for the $3$-dimensional parabolic
  Gross-Pitaevskii and related systems

We prove a Liouville-type theorem for semilinear parabolic systems of the
form $${\partial_t u_i}-\Delta u_i =\sum_{j=1}^{m}\beta_{ij} u_i^ru_j^{r+1},
\quad i=1,2,...,m$$ in the whole space ${\mathbb R}^N\times {\mathbb R}$. Very
recently, Quittner [{\em Math. Ann.}, DOI 10.1007/s00208-015-1219-7 (2015)] has
established an optimal result for $m=2$ in dimension $N\leq 2$, and partial
results in higher dimensions in the range $p< N/(N-2)$. By nontrivial
modifications of the techniques of Gidas and Spruck and of Bidaut-V\'eron, we
partially improve the results of Quittner in dimensions $N\geq 3$. In
particular, our results solve the important case of the parabolic
Gross-Pitaevskii system -- i.e. the cubic case $r=1$ -- in space dimension
$N=3$, for any symmetric $(m,m)$-matrix $(\beta_{ij})$ with nonnegative
entries, positive on the diagonal. By moving plane and monotonicity arguments,
that we actually develop for more general cooperative systems, we then deduce a
Liouville-type theorem in the half-space ${\mathbb R}^N_+\times {\mathbb R}$.
As applications, we give results on universal singularity estimates, universal
bounds for global solutions, and blow-up rate estimates for the corresponding
initial value problem