pinecone/core-2020-05-10-deduplication huggingface dataset:
Higgs boson production at the LHC using the qT subtraction formalism at N3LO QCD.

We consider higher-order QCD corrections to Higgs boson production through gluon-gluon fusion in the large top quark mass limit in hadron collisions. We extend the transverse-momentum (qT ) subtraction method to next-to-next-to-next-to-leading order (N3LO) and combine it with the NNLO Higgs-plus-jet calculation to numerically compute differential infrared-safe observables at N3LO for Higgs boson production in gluon fusion. To cancel the infrared divergences, we exploit the universal behaviour of the associated qT distributions in the small-qT region. We document all the necessary ingredients of the transverse-momentum subtraction method up to N3LO. The missing third-order collinear functions, which contribute only at qT = 0, are approximated using a prescription which uses the known result for the total Higgs boson cross section at this order. As a first application of the third-order qT subtraction method, we present the N3LO rapidity distribution of the Higgs boson at the LHC
Double copy structure of CFT correlators.

We consider the momentum-space 3-point correlators of currents, stress tensors and marginal scalar operators in general odd-dimensional conformal field theories. We show that the flat space limit of these correlators is spanned by gauge and gravitational scattering amplitudes in one higher dimension which are related by a double copy. Moreover, we recast three-dimensional CFT correlators in terms of tree-level Feynman diagrams without energy conservation, suggesting double copy structure beyond the flat space limit
Emergent dark gravity from (non)holographic screens.

In this work, a clear connection is made between E. Verlinde’s recent theory of emergent gravity in de Sitter space, and the earlier work describing emergent gravity using holographic screens. A modified (non)holographic screen scenario is presented, wherein the screen fails to encode an emergent mass in the bulk “unemerged” part of space for sufficiently large length-scales, where the volume-law of the non-holographic bulk degrees of freedom overtakes the area-law scaling of the entropy of the screen. Within this framework, we can describe both an emergent dark gravitational force, which scales like   1r , and also a version of the baryonic Tully-Fisher relation. We therefore recast these results within an emergent gravity framework in which there is an explicit violation of holography for sufficiently large length-scales
Covariant propagator in AdS5 x S5 superspace

We give an explicit superspace propagator for the chiral scalar field
strength of 10D IIB supergravity on an AdS5 x S5 background. Because this space
is conformally flat, the propagator is very simple, almost identical to that of
flat space. We also give an explicit expansion over the Kaluza-Klein modes of
S5. The fact that the full propagator is so much simpler suggests that, as in
2D conformal field theory, AdS/CFT calculations would be simpler without a mode
expansion.Comment: 17 pages, no figures; v2: reference added, typos corrected; v3:
  further revised, typos correcte
Quantum AdS_5 x S^5 superstring in the AdS light-cone gauge

We consider the AdS_5 x S^5 superstring in the light-cone gauge adapted to a
massless geodesic in AdS5 in the Poincare patch. The resulting action has a
relatively simple structure which makes it a natural starting point for various
perturbative quantum computations. We illustrate the utility of this AdS
light-cone gauge action by computing the 1-loop and 2-loop corrections to the
null cusp anomalous dimension reproducing in a much simpler and efficient way
earlier results obtained in conformal gauge. This leads to a further insight
into the structure of the superstring partition function in non-trivial
background.Comment: 21pages, Late
Double Parton Distributions Incorporating Perturbative QCD Evolution and
  Momentum and Quark Number Sum Rules

It is anticipated that hard double parton scatterings will occur frequently
in the collisions of the LHC, producing interesting signals and significant
backgrounds to certain single scattering processes. For double scattering
processes in which the same hard scale t = ln(Q^2) is involved in both
collisions, we require the double parton distributions (dPDFs)
D_h^{j_1j_2}(x_1,x_2;t) in order to make theoretical predictions of their rates
and properties. We describe the development of a new set of leading order dPDFs
that represents an improvement on approaches used previously. First, we derive
momentum and number sum rules that the dPDFs must satisfy. The fact that these
must be obeyed at any scale is used to construct improved dPDFs at the input
scale Q_0, for a particular choice of input scale (Q_0^2 = 1 GeV^2) and
corresponding single PDFs (the MSTW2008LO set). We then describe a novel
program which uses a direct x-space method to numerically integrate the LO
DGLAP equation for the dPDFs, and which may be used to evolve the input dPDFs
to any other scale. This program has been used along with the improved input
dPDFs to produce a set of publicly available dPDF grids covering the ranges
10^{-6}<x_1<1, 10^{-6}<x_2<1, and 1<Q^2<10^9 GeV^2.Comment: 41 pages, 14 figures. dPDF grids and code can be found at
  http://projects.hepforge.org/gsdpdf/ . v4: Removed eps files included by
  mistake in previous version
Abelian Gauge Fluxes and Local Models in F-Theory

We analyze the Abelian gauge fluxes in local F-theory models with G_S=SU(6)
and SO(10). For the case of G_S=SO(10), there is a no-go theorem which states
that for an exotic-free spectrum, there are no solutions for U(1)^2 gauge
fluxes. We explicitly construct the U(1)^2 gauge fluxes with an exotic-free
bulk spectrum for the case of G_S=SU(6). We also analyze the conditions for the
curves supporting the given field content and discuss non-minimal spectra of
the MSSM with doublet-triplet splitting.Comment: 43 pages, 15 tables; typos corrected, reference adde
Patterns of Soft Masses from General Semi-Direct Gauge Mediation

We give a general formulation of semi-direct gauge mediation of supersymmetry
breaking where the messengers interact with the hidden sector only through a
weakly gauged group. Using this general formulation, we provide an explicit
proof that the MSSM gaugino masses are vanishing to leading order in the gauge
couplings. On the other hand, the MSSM sfermion masses have, generically, a
non-vanishing leading contribution. We discuss how such a mechanism can
successfully be combined with other mediation schemes which give tachyonic
sfermions, such as sequestered anomaly mediation and some direct gauge
mediation models.Comment: 26 pages, 5 figures; v2: refs added; v3: minor corrections,
  clarifications added, mainly in section
How large can the SM contribution to CP violation in D0-D¯0 mixing be?

We reconsider the leading HQE contributions to the absorptive part of the mixing amplitude of neutral D mesons by taking also α s corrections and subleading 1/m c corrections into account. We show that these contributions to Γ12 do not vanish in the exact SU(3) F limit and they also can have a large phase. Moreover, we give an example of a new physics model that can enhance these leading HQE terms to Γ12, which are orders of magnitude lower than the current experimental expectation, by one to two orders of magnitude
AdS_3/LCFT_2 - Correlators in Cosmological Topologically Massive Gravity

For cosmological topologically massive gravity at the chiral point we
calculate momentum space 2- and 3-point correlators of operators in the
postulated dual CFT on the cylinder. These operators are sourced by the bulk
and boundary gravitons. Our correlators are fully consistent with the proposal
that cosmological topologically massive gravity at the chiral point is dual to
a logarithmic CFT. In the process we give a complete classification of
normalizable and non-normalizeable left, right and logarithmic solutions to the
linearized equations of motion in global AdS_3.Comment: 39 pages + appendices, 1 eps figure, v2: minor changes in text in
  4.1.2, corrected typo in (2.31
Gluon-initiated production of a Kaluza-Klein gluon in a Bulk
  Randall-Sundrum model

In the Bulk Randall-Sundrum model, the Kaluza-Klein excitations of the gauge
bosons are the primary signatures. In particular, the search for the
Kaluza-Klein (KK) excitation of the gluon at hadron colliders is of great
importance in testing this model. At the leading order in QCD, the production
of this KK-gluon proceeds only via q qbar-initial states. We study the
production of KK-gluons from gluon initial states at next-to-leading order in
QCD. We find that, even after including the sub-dominant KK-gluon loops at this
order, the next-to-leading order (NLO) cross-section is tiny compared to the
leading order cross-section and unlikely to impact the searches for this
resonance at hardon colliders.Comment: 31 pages, 7 figures. v2: Added reference
Defect Perturbations in Landau-Ginzburg Models

Perturbations of B-type defects in Landau-Ginzburg models are considered. In
particular, the effect of perturbations of defects on their fusion is analyzed
in the framework of matrix factorizations. As an application, it is discussed
how fusion with perturbed defects induces perturbations on boundary conditions.
It is shown that in some classes of models all boundary perturbations can be
obtained in this way. Moreover, a universal class of perturbed defects is
constructed, whose fusion under certain conditions obey braid relations. The
functors obtained by fusing these defects with boundary conditions are twist
functors as introduced in the work of Seidel and Thomas.Comment: 46 page
Likelihood analysis of the next-to-minimal supergravity motivated model

In anticipation of data from the Large Hadron Collider (LHC) and the
potential discovery of supersymmetry, in this work we seek an answer to the
following: What are the chances that supersymmetry will be found at the LHC?
Will the LHC data be enough to discover a given supersymmetric model? And what
other measurements can assist the LHC establish the presence of supersymmetry?
As a step toward answering these general questions, we calculate the odds of
the next-to-minimal version of the popular supergravity motivated model
(NmSuGra) being discovered at the LHC to be 4:3 (57 %). We also demonstrate
that viable regions of the NmSuGra parameter space outside the LHC reach can be
covered by upgraded versions of dark matter direct detection experiments, such
as super-CDMS, at 99 % confidence level. Due to the similarities of the models,
we expect very similar results for the constrained minimal supersymmetric
standard model (CMSSM).Comment: 21 pages, 7 figure
Low Scale Direct Gauge Mediation with Perturbatively Stable Vacuum

In a class of direct gauge mediation with a perturbatively stable SUSY
breaking vacuum, gaugino masses vanish at the leading order of SUSY breaking
F-term. We study the allowed parameter space of the gauge mediation models. By
imposing a Tevatron bound on the lightest chargino mass m_{{\tilde \chi}^\pm_1}
> 270 GeV and a warm dark-matter mass bound on the light gravitino mass m_{3/2}
< 16 eV, we find that almost all the parameter space is excluded. Near future
experiments may completely exclude, or possibly discover, the scenario.Comment: 31 pages, 5 figures; v3: minor correction
Bulk Viscosity and Cavitation in Boost-Invariant Hydrodynamic Expansion

We solve second order relativistic hydrodynamics equations for a
boost-invariant 1+1-dimensional expanding fluid with an equation of state taken
from lattice calculations of the thermodynamics of strongly coupled quark-gluon
plasma. We investigate the dependence of the energy density as a function of
proper time on the values of the shear viscosity, the bulk viscosity, and
second order coefficients, confirming that large changes in the values of the
latter have negligible effects. Varying the shear viscosity between zero and a
few times s/(4 pi), with s the entropy density, has significant effects, as
expected based on other studies. Introducing a nonzero bulk viscosity also has
significant effects. In fact, if the bulk viscosity peaks near the crossover
temperature Tc to the degree indicated by recent lattice calculations in QCD
without quarks, it can make the fluid cavitate -- falling apart into droplets.
It is interesting to see a hydrodynamic calculation predicting its own
breakdown, via cavitation, at the temperatures where hadronization is thought
to occur in ultrarelativistic heavy ion collisions.Comment: 25 pages, 4 figures; 3 footnotes added in v2; 1 footnote amended in
  v3, which is the version published in JHE
On nonsupersymmetric $\BC^4/\BZ_N$, tachyons, terminal singularities and
  flips

We investigate nonsupersymmetric $\BC^4/\BZ_N$ orbifold singularities using
their description in terms of the string worldsheet conformal field theory and
its close relation with the toric geometry description of these singularities
and their possible resolutions. Analytic and numerical study strongly suggest
the absence of nonsupersymmetric Type II terminal singularities (i.e. with no
marginal or relevant blowup modes) so that there are always moduli or closed
string tachyons that give rise to resolutions of these singularities, although
supersymmetric and Type 0 terminal singularities do exist. Using gauged linear
sigma models, we analyze the phase structure of these singularities, which
often involves 4-dimensional flip transitions, occurring between resolution
endpoints of distinct topology. We then discuss 4-dim analogs of unstable
conifold-like singularities that exhibit flips, in particular their Type II GSO
projection and the phase structure. We also briefly discuss aspects of
M2-branes stacked at such singularities and nonsupersymmetric $AdS_4\times
S^7/\BZ_N$ backgrounds.Comment: Latex, 43pgs incl. appendices, 2 eps figs, v2. minor clarifications
  added, to appear in JHE
A Duality For The S Matrix

We propose a dual formulation for the S Matrix of N = 4 SYM. The dual
provides a basis for the "leading singularities" of scattering amplitudes to
all orders in perturbation theory, which are sharply defined, IR safe data that
uniquely determine the full amplitudes at tree level and 1-loop, and are
conjectured to do so at all loop orders. The scattering amplitude for n
particles in the sector with k negative helicity gluons is associated with a
simple integral over the space of k planes in n dimensions, with the action of
parity and cyclic symmetries manifest. The residues of the integrand compute a
basis for the leading singularities. A given leading singularity is associated
with a particular choice of integration contour, which we explicitly identify
at tree level and 1-loop for all NMHV amplitudes as well as the 8 particle
NNMHV amplitude. We also identify a number of 2-loop leading singularities for
up to 8 particles. There are a large number of relations among residues which
follow from the multi-variable generalization of Cauchy's theorem known as the
"global residue theorem". These relations imply highly non-trivial identities
guaranteeing the equivalence of many different representations of the same
amplitude. They also enforce the cancellation of non-local poles as well as
consistent infrared structure at loop level. Our conjecture connects the
physics of scattering amplitudes to a particular subvariety in a Grassmannian;
space-time locality is reflected in the topological properties of this space.Comment: 77 pages, 19 figure
Some Algebraic Aspects of Half-BPS Bound States in M-Theory

We revisit non-marginal half-BPS solutions of M-theory in the framework of
the possible existence of an underlying E11 Kac-Moody symmetry. In this
context, non-marginal BPS solutions of M-theory can be described as exact
solutions of the brane sigma-model E10/K(E10), extending results obtained
earlier for marginal BPS solutions. We uncover an elegant and simple algebraic
structure underlying the bound states by looking at subalgebras embedded in
E10. Furthermore, we show that the non-marginal BPS solutions can be obtained
from the elementary marginal ones by the action of K(E10) transformations.Comment: 48 page
Four Generations: SUSY and SUSY Breaking

We revisit four generations within the context of supersymmetry. We compute
the perturbativity limits for the fourth generation Yukawa couplings and show
that if the masses of the fourth generation lie within reasonable limits of
their present experimental lower bounds, it is possible to have perturbativity
only up to scales around 1000 TeV. Such low scales are ideally suited to
incorporate gauge mediated supersymmetry breaking, where the mediation scale
can be as low as 10-20 TeV. The minimal messenger model, however, is highly
constrained. While lack of electroweak symmetry breaking rules out a large part
of the parameter space, a small region exists, where the fourth generation stau
is tachyonic. General gauge mediation with its broader set of boundary
conditions is better suited to accommodate the fourth generation.Comment: 27 pages, 5 figure
General Aspects of Tree Level Gauge Mediation

Tree level gauge mediation (TGM) may be considered as the simplest way to
communicate supersymmetry breaking: through the tree level renormalizable
exchange of heavy gauge messengers. We study its general structure, in
particular the general form of tree level sfermion masses and of one loop, but
enhanced, gaugino masses. This allows us to set up general guidelines for model
building and to identify the hypotheses underlying the phenomenological
predictions. In the context of models based on the "minimal" gauge group
SO(10), we show that only two "pure" embeddings of the MSSM fields are possible
using $d< 120$ representations, each of them leading to specific predictions
for the ratios of family universal sfermion masses at the GUT scale,
$m^2_{\bar{5}} = 2 m^2_{10}$ or $m^2_{\bar{5}} = (3/4) m^2_{10}$ (in SU(5)
notation). These ratios are determined by group factors and are peculiar enough
to make this scheme testable at the LHC. We also discuss three possible
approaches to the $\mu$-problem, one of them distinctive of TGM.Comment: 37 pages, 2 figure
Unraveling L_{n,k}: Grassmannian Kinematics

It was recently proposed that the leading singularities of the S-Matrix of N
= 4 super Yang-Mills theory arise as the residues of a contour integral over a
Grassmannian manifold, with space-time locality encoded through residue
theorems generalizing Cauchy's theorem to more than one variable. We provide a
method to identify the residue corresponding to any leading singularity, and we
carry this out very explicitly for all leading singularities at tree level and
one-loop. We also give several examples at higher loops, including all generic
two-loop leading singularities and an interesting four-loop object. As a
special case we consider a 12-pt N^4MHV leading singularity at two loops that
has a new kinematic structure involving double square roots. Our analysis
results in a simple picture for how the topological structure of loop graphs is
reflected in various substructures within the Grassmannian.Comment: 26+11 page
Inflation with Non-minimal Gravitational Couplings and Supergravity

We explore in the supergravity context the possibility that a Higgs scalar
may drive inflation via a non-minimal coupling to gravity characterised by a
large dimensionless coupling constant. We find that this scenario is not
compatible with the MSSM, but that adding a singlet field (NMSSM, or a variant
thereof) can very naturally give rise to slow-roll inflation. The inflaton is
necessarily contained in the doublet Higgs sector and occurs in the D-flat
direction of the two Higgs doublets.Comment: 13 pages, 1 figur
Series Solution and Minimal Surfaces in AdS

According to the Alday-Maldacena program the strong coupling limit of Super
Yang-Mills scattering amplitudes is given by minimal area surfaces in AdS
spacetime with a boundary consisting of a momentum space polygon. The string
equations in AdS systematically reduce to coupled Toda type equations whose
Euclidean classical solutions are then of direct relevance. While in the
simplest case of AdS_3 exact solutions were known from earlier studies of the
sinh-Gordon equation, there exist at present no similar exact forms for the
generalized Toda equations related to AdS_d with d>=4. In this paper we develop
a series method for the solution to those equations and evaluate their
contribution to the finite piece of the worldsheet area. For the known
sinh-Gordon case the method is seen to give results in excellent agreement with
the exact answer.Comment: 19 pages, no figures; references added, one note adde
Supersymmetric particle mass measurement with the boost-corrected
  contransverse mass

A modification to the contransverse mass (MCT) technique for measuring the
masses of pair-produced semi-invisibly decaying heavy particles is proposed in
which MCT is corrected for non-zero boosts of the centre-of-momentum (CoM)
frame of the heavy states in the laboratory transverse plane. Lack of knowledge
of the mass of the CoM frame prevents exact correction for this boost, however
it is shown that a conservative correction can nevertheless be derived which
always generates an MCT value which is less than or equal to the true value of
MCT in the CoM frame. The new technique is demonstrated with case studies of
mass measurement with fully leptonic ttbar events and with SUSY events
possessing a similar final state.Comment: 33 pages, 33 .eps figures, JHEP3 styl
Flavor conversion of cosmic neutrinos from hidden jets

High energy cosmic neutrino fluxes can be produced inside relativistic jets
under the envelopes of collapsing stars. In the energy range E ~ (0.3 - 1e5)
GeV, flavor conversion of these neutrinos is modified by various matter effects
inside the star and the Earth. We present a comprehensive (both analytic and
numerical) description of the flavor conversion of these neutrinos which
includes: (i) oscillations inside jets, (ii) flavor-to-mass state transitions
in an envelope, (iii) loss of coherence on the way to observer, and (iv)
oscillations of the mass states inside the Earth. We show that conversion has
several new features which are not realized in other objects, in particular
interference effects ("L- and H- wiggles") induced by the adiabaticity
violation. The neutrino-neutrino scattering inside jet and inelastic neutrino
interactions in the envelope may produce some additional features at E > 1e4
GeV. We study dependence of the probabilities and flavor ratios in the
matter-affected region on angles theta13 and theta23, on the CP-phase delta, as
well as on the initial flavor content and density profile of the star. We show
that measurements of the energy dependence of the flavor ratios will, in
principle, allow to determine independently the neutrino and astrophysical
parameters.Comment: 56 pages, 19 figures. Minor changes. Accepted by JHEP
S-duality and 2d Topological QFT

We study the superconformal index for the class of N=2 4d superconformal
field theories recently introduced by Gaiotto. These theories are defined by
compactifying the (2,0) 6d theory on a Riemann surface with punctures. We
interpret the index of the 4d theory associated to an n-punctured Riemann
surface as the n-point correlation function of a 2d topological QFT living on
the surface. Invariance of the index under generalized S-duality
transformations (the mapping class group of the Riemann surface) translates
into associativity of the operator algebra of the 2d TQFT. In the A_1 case, for
which the 4d SCFTs have a Lagrangian realization, the structure constants and
metric of the 2d TQFT can be calculated explicitly in terms of elliptic gamma
functions. Associativity then holds thanks to a remarkable symmetry of an
elliptic hypergeometric beta integral, proved very recently by van de Bult.Comment: 25 pages, 11 figure