pinecone/core-2020-05-10-deduplication huggingface dataset:
The next-to-leading order forward jet vertex in the small-cone
  approximation

We consider within QCD collinear factorization the process p+p to jet + jet
+X, where two forward high-$p_T$ jets are produced with a large separation in
rapidity $\Delta y$ (Mueller-Navelet jets). In this case the (calculable) hard
part of the reaction receives large higher-order corrections $\sim \alpha^n_s
(\Delta y)^n$, which can be accounted for in the BFKL approach. In particular,
we calculate in the next-to-leading order the impact factor (vertex) for the
production of a forward high-$p_T$ jet, in the approximation of small aperture
of the jet cone in the pseudorapidity-azimuthal angle plane. The final
expression for the vertex turns out to be simple and easy to implement in
numerical calculations.Comment: 32 pages, 4 figures; a few comments and one reference added; a few
  inessential misprints removed; version to appear on JHE
LHC diphoton Higgs signal and top quark forward-backward asymmetry in
  quasi-inert Higgs doublet model

In the quasi-inert Higgs doublet model, we study the LHC diphoton rate for a
standard model-like Higgs boson and the top quark forward-backward asymmetry at
Tevatron. Taking into account the constraints from the vacuum stability,
unitarity, electroweak precision tests, flavor physics and the related
experimental data of top quark, we find that compared with the standard model
prediction, the diphoton rate of Higgs boson at LHC can be enhanced due to the
light charged Higgs contributions, while the measurement of the top quark
forward-backward asymmetry at Tevatron can be explained to within $1\sigma$ due
to the non-standard model neutral Higgs bosons contributions. Finally, the
correlations between the two observables are discussed.Comment: 14 pages, 5 figues. Version to appear in JHEP, some references adde
An ideal toy model for confining, walking and conformal gauge theories:
  the O(3) sigma model with theta-term

A toy model is proposed for four dimensional non-abelian gauge theories
coupled to a large number of fermionic degrees of freedom. As the number of
flavors is varied the gauge theory may be confining, walking or conformal. The
toy model mimicking this feature is the two dimensional O(3) sigma model with a
theta-term. For all theta the model is asymptotically free. For small theta the
model is confining in the infra red, for theta = pi the model has a non-trivial
infra red fixed point and consequently for theta slightly below pi the coupling
walks. The first step in investigating the notoriously difficult systematic
effects of the gauge theory in the toy model is to establish non-perturbatively
that the theta parameter is actually a relevant coupling. This is done by
showing that there exist quantities that are entirely given by the total
topological charge and are well defined in the continuum limit and are
non-zero, despite the fact that the topological susceptibility is divergent.
More precisely it is established that the differences of connected correlation
functions of the topological charge (the cumulants) are finite and non-zero and
consequently there is only a single divergent parameter in Z(theta) but
otherwise it is finite. This divergent constant can be removed by an
appropriate counter term rendering the theory completely finite even at theta >
0.Comment: 9 pages, 2 figures, minor modification, references adde
Neutralino dark matter in mSUGRA/CMSSM with a 125 GeV light Higgs scalar

The minimal supergravity (mSUGRA or CMSSM) model is an oft-used framework for
exhibiting the properties of neutralino (WIMP) cold dark matter (CDM). However,
the recent evidence from Atlas and CMS on a light Higgs scalar with mass
m_h\simeq 125 GeV highly constrains the superparticle mass spectrum, which in
turn constrains the neutralino annihilation mechanisms in the early universe.
We find that stau and stop co-annihilation mechanisms -- already highly
stressed by the latest Atlas/CMS results on SUSY searches -- are nearly
eliminated if indeed the light Higgs scalar has mass m_h\simeq 125 GeV.
Furthermore, neutralino annihilation via the A-resonance is essentially ruled
out in mSUGRA so that it is exceedingly difficult to generate
thermally-produced neutralino-only dark matter at the measured abundance. The
remaining possibility lies in the focus-point region which now moves out to
m_0\sim 10-20 TeV range due to the required large trilinear soft SUSY breaking
term A_0. The remaining HB/FP region is more fine-tuned than before owing to
the typically large top squark masses. We present updated direct and indirect
detection rates for neutralino dark matter, and show that ton scale noble
liquid detectors will either discover mixed higgsino CDM or essentially rule
out thermally-produced neutralino-only CDM in the mSUGRA model.Comment: 17 pages including 9 .eps figure
Two-loop Corrections to the B to pi Form Factor from QCD Sum Rules on
  the Light-Cone and |V(ub)|

We calculate the leading-twist O(alphas^2 beta0) corrections to the B to pi
transition form factor f+(0) in light-cone sum rules. We find that, as
expected, there is a cancellation between the O(alphas^2 beta0) corrections to
fB f+(0) and the large corresponding corrections to fB, calculated in QCD sum
rules. This suggests the insensitivity of the form factors calculated in the
light-cone sum rules approach to this source of radiative corrections. We
further obtain an improved determination of the CKM matrix element |V(ub)|,
using latest results from BaBar and Belle for f+(0)|V(ub)|.Comment: 18 pages, 3 figure
Exact results for static and radiative fields of a quark in N=4 super
  Yang-Mills

In this work (which supersedes our previous preprint arXiv:1112.2345) we
determine the expectation value of the N=4$ SU(N) SYM Lagrangian density
operator in the presence of an infinitely heavy static particle in the
symmetric representation of SU(N), by means of a D3-brane probe computation.
The result that we obtain coincides with two previous computations of different
observables, up to kinematical factors. We argue that these agreements go
beyond the D-brane probe approximation, which leads us to propose an exact
formula for the expectation value of various operators. In particular, we
provide an expression for the total energy loss by radiation of a heavy
particle in the fundamental representation.Comment: 14 pages. This submission supersedes our previous preprint
  arXiv:1112.2345. v2: numerical factors fixed, minor clarifications, added
  reference
Gauge-invariant correlation functions in light-cone superspace

We initiate a study of correlation functions of gauge-invariant operators in
N=4 super Yang-Mills theory using the light-cone superspace formalism. Our
primary aim is to develop efficient methods to compute perturbative corrections
to correlation functions. This analysis also allows us to examine potential
subtleties which may arise when calculating off-shell quantities in light-cone
gauge. We comment on the intriguing possibility that the manifest N=4
supersymmetry in this approach may allow for a compact description of entire
multiplets and their correlation functions.Comment: 35 pages, several figure
Fingerprinting Higgs Suspects at the LHC

We outline a method for characterizing deviations from the properties of a
Standard Model (SM) Higgs boson. We apply it to current data in order to
characterize up to which degree the SM Higgs boson interpretation is consistent
with experiment. We find that the SM Higgs boson is consistent with the current
data set at the 82 % confidence level, based on data of excess events reported
by CMS and ATLAS, which are interpreted to be related to the mass scale mh =
124-126 GeV, and on published CL_s exclusion regions. We perform a global fit
in terms of two parameters characterizing the deviation from the SM value in
the gauge and fermion couplings of a Higgs boson. We find two minima in the
global fit and identify observables that can remove this degeneracy. An update
for Moriond 2012 data is included in the Appendix, which finds that the SM
Higgs boson is now consistent with the current data set at only the 94 %
confidence level (which corresponds to ~ 2 sigma tension compared to the best
fit point).Comment: 23 pp, V2 Moriond 2012 update, typos fixe
The cusp anomalous dimension at three loops and beyond

We derive an analytic formula at three loops for the cusp anomalous dimension
Gamma_cusp(phi) in N=4 super Yang-Mills. This is done by exploiting the
relation of the latter to the Regge limit of massive amplitudes. We comment on
the corresponding three loops quark anti-quark potential. Our result also
determines a considerable part of the three-loop cusp anomalous dimension in
QCD. Finally, we consider a limit in which only ladder diagrams contribute to
physical observables. In that limit, a precise agreement with strong coupling
is observed.Comment: 34 pages, 6 figures. v2: references added, typos correcte
Fitting Neutrino Physics with a U(1)_R Lepton Number

We study neutrino physics in the context of a supersymmetric model where a
continuous R-symmetry is identified with the total Lepton Number and one
sneutrino can thus play the role of the down type Higgs. We show that
R-breaking effects communicated to the visible sector by Anomaly Mediation can
reproduce neutrino masses and mixing solely via radiative contributions,
without requiring any additional degree of freedom. In particular, a relatively
large reactor angle (as recently observed by the Daya Bay collaboration) can be
accommodated in ample regions of the parameter space. On the contrary, if the
R-breaking is communicated to the visible sector by gravitational effects at
the Planck scale, additional particles are necessary to accommodate neutrino
data.Comment: 19 pages, 3 figures; v2: references added, constraints updated,
  overall conclusions unchange
Once more on the Witten index of 3d supersymmetric YM-CS theory

The problem of counting the vacuum states in the supersymmetric 3d
Yang-Mills-Chern-Simons theory is reconsidered. We resolve the controversy
between its original calculation by Witten at large volumes and the calculation
based on the evaluation of the effective Lagrangian in the small volume limit.
We show that the latter calculation suffers from uncertainties associated with
the singularities in the moduli space of classical vacua where the
Born-Oppenheimer approximation breaks down. We also show that these
singularities can be accurately treated in the Hamiltonian Born-Oppenheimer
method, where one has to match carefully the effective wave functions on the
Abelian valley and the wave functions of reduced non-Abelian QM theory near the
singularities. This gives the same result as original Witten's calculation.Comment: 27 page
Natural Supersymmetry: LHC, dark matter and ILC searches

Particle physics models with Natural Supersymmetry are characterized by a
superpotential parameter \mu \sim m_h \sim125$ GeV, while third generation
squarks have mass <0.5-1.5 TeV. Gluinos should be lighter than several TeV so
as not to destabilize the lighter squarks. First and second generation
sfermions can be at the tens-of-TeV level which yields a decoupling solution to
the SUSY flavor and CP problems. Adopting a top-down approach, we delineate the
range of GUT scale SUSY model parameters which leads to a Natural SUSY mass
spectrum. We find natural SUSY models to be tightly constrained by the b->
s\gamma branching fraction measurement while it is also difficult but not
impossible to accommodate a light Higgs scalar of mass ~125 GeV. We present
several benchmark points which are expandable to slopes and planes. Natural
SUSY is difficult to see at LHC unless some third generation squarks are very
light. The top- and bottom- squarks cascade decay mainly to higgsino-like
charginos and neutralinos via numerous possibilities, leading to a rather
complex set of signatures. Meanwhile, a linear e^+e^- collider operating at
\sqrt{s}\sim 0.25-0.5 TeV would be a higgsino factory and is essentially
guaranteed a SUSY discovery of the low-lying charged and neutral higgsino
states. Since thermal neutralino cold dark matter is underproduced, we
conjecture that the incorporation of a Peccei-Quinn sector or light moduli into
the theory will augment higgsino dark matter production, possibly together with
an admixture of axions. We present rates for direct and indirect higgsino dark
matter detection for the case where light higgsinos dominate the dark matter
abundance.Comment: 24 pages including 21 .eps figure
On the Solutions of Generalized Bogomolny Equations

Generalized Bogomolny equations are encountered in the localization of the
topological N=4 SYM theory. The boundary conditions for 't Hooft and surface
operators are formulated by giving a model solution with some special
singularity. In this note we consider the generalized Bogomolny equations on a
half space and construct model solutions for the boundary 't Hooft and surface
operators. It is shown that for the 't Hooft operator the equations reduce to
the open Toda chain for arbitrary simple gauge group. For the surface operators
the solutions of interest are rational solutions of a periodic non-abelian Toda
system.Comment: 16 pages, no figure
Octonionic black holes

Using algebraic tools inspired by the study of nilpotent orbits in simple Lie
algebras, we obtain a large class of solutions describing interacting non-BPS
black holes in N=8 supergravity, which depend on 44 harmonic functions. For
this purpose, we consider a truncation E6(6) / Sp(8,R) of the non-linear sigma
model describing stationary solutions of the theory, which permits a reduction
of algebraic computations to the multiplication of 27 by 27 matrices. The lift
to N=8 supergravity is then carried out without loss of information by using a
pertinent representation of the moduli parametrizing E7(7) / SU(8) in terms of
complex valued Hermitian matrices over the split octonions, which generalise
the projective coordinates of exceptional special Kaehler manifolds. We extract
the electromagnetic charges, mass and angular momenta of the solutions, and
exhibit the duality invariance of the black holes distance separations. We
discuss in particular a new type of interaction which appears when interacting
non-BPS black holes are not aligned. Finally we will explain the possible
generalisations toward the description of the most general stationary black
hole solutions of N=8 supergravity.Comment: 90 pages, Corrected version for publication in JHE
Warped \(AdS_3\)/Dipole-CFT Duality

String theory contains solutions with \(SL(2, \mathbb{R})_R \times U(1)_L\)-invariant warped \(AdS_3\) \((WAdS_3)\) factors arising as continuous deformations of ordinary \(AdS_3\) factors.  We propose that some of these are holographically dual to the IR limits of nonlocal dipole-deformed 2D D-brane gauge theories, referred to as “dipole CFTs”.  Neither the bulk nor boundary theories are currently well-understood, and consequences of the proposed duality for both sides is investigated.  The bulk entropy-area law suggests that dipole CFTs have (at large N) a high-energy density of states which does not depend on the deformation parameter.  Putting the boundary theory on a spatial circle leads to closed timelike curves in the bulk, suggesting a relation of the latter to dipole-type nonlocality.Physic
Numerical studies of the ABJM theory for arbitrary N at arbitrary
  coupling constant

We show that the ABJM theory, which is an N=6 superconformal U(N)*U(N)
Chern-Simons gauge theory, can be studied for arbitrary N at arbitrary coupling
constant by applying a simple Monte Carlo method to the matrix model that can
be derived from the theory by using the localization technique. This opens up
the possibility of probing the quantum aspects of M-theory and testing the
AdS_4/CFT_3 duality at the quantum level. Here we calculate the free energy,
and confirm the N^{3/2} scaling in the M-theory limit predicted from the
gravity side. We also find that our results nicely interpolate the analytical
formulae proposed previously in the M-theory and type IIA regimes. Furthermore,
we show that some results obtained by the Fermi gas approach can be clearly
understood from the constant map contribution obtained by the genus expansion.
The method can be easily generalized to the calculations of BPS operators and
to other theories that reduce to matrix models.Comment: 35 pages, 20 figures; reference added. The simulation code is
  available upon request to mhonda@post.kek.j
Twisted supersymmetric 5D Yang-Mills theory and contact geometry

We extend the localization calculation of the 3D Chern-Simons partition
function over Seifert manifolds to an analogous calculation in five dimensions.
We construct a twisted version of N=1 supersymmetric Yang-Mills theory defined
on a circle bundle over a four dimensional symplectic manifold. The notion of
contact geometry plays a crucial role in the construction and we suggest a
generalization of the instanton equations to five dimensional contact
manifolds. Our main result is a calculation of the full perturbative partition
function on a five sphere for the twisted supersymmetric Yang-Mills theory with
different Chern-Simons couplings. The final answer is given in terms of a
matrix model. Our construction admits generalizations to higher dimensional
contact manifolds. This work is inspired by the work of Baulieu-Losev-Nekrasov
from the mid 90's, and in a way it is covariantization of their ideas for a
contact manifold.Comment: 28 pages; v2: minor mistake corrected; v3: matches published versio
The Lorentz-invariant boundary action of the confining string and its
  universal contribution to the inter-quark potential

We study the boundary contribution to the low energy effective action of the
open string describing the confining flux tube in gauge theories. The form of
the boundary terms is strongly constrained by the requirement of Lorentz
symmetry, which is spontaneously broken by the formation of a long confining
flux tube in the vacuum. Writing the boundary action as an expansion in the
derivatives of the Nambu-Goldstone modes describing the transverse fluctuations
of the string, we single out and put in a closed form the first few Lorentz
invariant boundary terms. We also evaluate the leading deviation from the
Nambu-Goto string produced by the boundary action on the vacuum expectation
value of the Wilson loop and we test this prediction in the 3d Ising gauge
model. Our simulation attains a level of precision which is sufficient to test
the contribution of this term.Comment: 17 pages, 5 figures, LateX 2e. V2: Final version published on JHEP.
  Fixed typos in eq.s 2.2, 2.3, 3.7, 3.8, A.4. Extended explanation of the
  procedures used in sec 2 to determine the possible boundary terms up to field
  redefinitions and of the procedure used in sec 4 to take the continuum limit.
  V3: typos corrected in eq.s (4.3) (4.5) and (4.6), acknowledgements adde
Dimuon CP Asymmetry in B Decays and Wjj Excess in Two Higgs Doublet
  Models

We analyze the puzzle of the dimuon CP asymmetry in B_s decays in two Higgs
doublet models. We show that the flavor changing neutral current (FCNC) induced
by the Higgs coupling in a type III two Higgs doublet model provides a solution
to the dimuon charge asymmetry puzzle by enhancing the absorbtive part of the
mixing amplitude \Gamma_{12}^s. We investigate different experimental
constraints and show that it is possible to enhance \Gamma_{12}^s in order to
explain the dimuon asymmetry observed by D0. This enhancement requires large
Higgs couplings to the first and second generations of quarks which may also
explain the recent 3.2 \sigma Wjj excess observed by CDF.Comment: 13 pages, 3 figure
A realistic model of neutrino masses with a large neutrinoless double beta decay rate

The minimal Standard Model extension with the Weinberg operator does accommodate the observed neutrino masses and mixing, but predicts a neutrinoless double beta (0νββ) decay rate proportional to the effective electron neutrino mass, which can be then arbitrarily small within present experimental limits. However, in general 0νββ decay can have an independent origin and be near its present experimental bound; whereas neutrino masses are generated radiatively, contributing negligibly to 0νββ decay. We provide a realization of this scenario in a simple, well defined and testable model, with potential LHC effects and calculable neutrino masses, whose two-loop expression we derive exactly. We also discuss the connection of this model to others that have appeared in the literature, and remark on the significant differences that result from various choices of quantum number assignments and symmetry assumptions. In this type of models lepton flavor violating rates are also preferred to be relatively large, at the reach of foreseen experiments. Interestingly enough, in our model this stands for a large third mixing angle, sin2θ13>∼0.008, when μ→eee is required to lie below its present experimental limit
Semiclassical folded string in AdS4 X CP3

We consider type IIA superstring theory on the background AdS4 x CP3, and the
classical solution describing a folded string spinning in AdS4 with angular
momentum in CP3. In the 't Hooft limit, it is the gravity dual of twist
operators in the ABJM superconformal theory. We quantize the classical solution
by algebraic curve methods and determine the first semiclassical correction to
the energy. We provide an integral representation for this quantity valid for
all values of the charges. We analyze its properties in the special regimes
associated with a short or long string providing various accurate analytical
expansions. Finally, we investigate various properties of the so-called slope,
the leading term of the energy for short strings, collecting information that
could be useful in attempts to generalize the exact results recently proposed
for the folded string in AdS5 x S5.Comment: 23 pages, 1 pdf figure, JHEP style, typo correcte
Extended supersymmetric sigma models in AdS_4 from projective superspace

There exist two superspace approaches to describe N=2 supersymmetric
nonlinear sigma models in four-dimensional anti-de Sitter (AdS_4) space: (i) in
terms of N=1 AdS chiral superfields, as developed in arXiv:1105.3111 and
arXiv:1108.5290; and (ii) in terms of N=2 polar supermultiplets using the AdS
projective-superspace techniques developed in arXiv:0807.3368. The virtue of
the approach (i) is that it makes manifest the geometric properties of the N=2
supersymmetric sigma-models in AdS_4. The target space must be a non-compact
hyperkahler manifold endowed with a Killing vector field which generates an
SO(2) group of rotations on the two-sphere of complex structures. The power of
the approach (ii) is that it allows us, in principle, to generate hyperkahler
metrics as well as to address the problem of deformations of such metrics.
  Here we show how to relate the formulation (ii) to (i) by integrating out an
infinite number of N=1 AdS auxiliary superfields and performing a superfield
duality transformation. We also develop a novel description of the most general
N=2 supersymmetric nonlinear sigma-model in AdS_4 in terms of chiral
superfields on three-dimensional N=2 flat superspace without central charge.
This superspace naturally originates from a conformally flat realization for
the four-dimensional N=2 AdS superspace that makes use of Poincare coordinates
for AdS_4. This novel formulation allows us to uncover several interesting
geometric results.Comment: 88 pages; v3: typos corrected, version published in JHE