pinecone/core-2020-05-10-deduplication huggingface dataset:
The Euler characteristic correction to the Kaehler potential - revisited

We confirm the leading $\alpha'^3$ correction to the 4d, $\mathcal N = 1$
K\"{a}hler potential of type IIB orientifold compactifications, proportional to
the Euler characteristic of the Calabi-Yau threefold (BBHL correction). We
present the explicit solution for the $\alpha'^3$-modified internal background
metric in terms of the non-harmonic part of the third Chern form of the leading
order Calabi-Yau manifold. The corrected internal manifold is almost Calabi-Yau
and admits an $SU(3)$ structure with non-vanishing torsion. We also find that
the full ten-dimensional Einstein frame background metric is multiplied by a
non-trivial Weyl factor. Performing a Kaluza-Klein reduction on the modified
background we derive the $\alpha'^3$-corrected kinetic terms for the dilaton
and the K\"{a}hler deformations of the internal Calabi-Yau threefold for
arbitrary $h^{1,1}$. We analyze these kinetic terms in the 4d, $\mathcal N = 2$
un-orientifolded theory, confirming the expected correction to the K\"ahler
moduli space prepotential, as well as in the 4d, $\mathcal N = 1$ orientifolded
theory, thus determining the corrections to the K\"ahler potential and K\"ahler
coordinates.Comment: 29 page
A CFT Perspective on Gravitational Dressing and Bulk Locality

We revisit the construction of local bulk operators in AdS/CFT with special
focus on gravitational dressing and its consequences for bulk locality.
Specializing to 2+1-dimensions, we investigate these issues via the proposed
identification between bulk operators and cross-cap boundary states. We obtain
explicit expressions for correlation functions of bulk fields with boundary
stress tensor insertions, and find that they are free of non-local branch cuts
but do have non-local poles. We recover the HKLL recipe for restoring bulk
locality for interacting fields as the outcome of a natural CFT crossing
condition. We show that, in a suitable gauge, the cross-cap states solve the
bulk wave equation for general background geometries, and satisfy a conformal
Ward identity analogous to a soft graviton theorem, Virasoro symmetry, the
large N conformal bootstrap and the uniformization theorem all play a key role
in our derivations.Comment: 42 pages, 6 figures; published versio
Twist decomposition of Drell-Yan structure functions: phenomenological
  implications

The forward Drell--Yan process in $pp$ scattering at the LHC at $\sqrt{S}=14$
TeV is considered. We analyze the Drell--Yan structure functions assuming the
dominance of a Compton-like emission of a virtual photon from a fast quark
scattering off the small $x$ gluons. The color dipole framework is applied to
perform quantitatively the twist decomposition of all the Drell--Yan structure
functions. Two models of the color dipole scattering are applied: the
Golec-Biernat--W\"{u}sthoff model and the dipole cross section obtained from
the Balitsky--Fadin--Kuraev--Lipatov evolution equation. The two models have
essentially different higher twist content and the gluon transverse momentum
distribution and lead to different significant effects beyond the collinear
leading twist description. It is found that the gluon transverse momentum
effects are significant in the Drell--Yan structure functions for all
Drell--Yan pair masses $M$, and the higher twist effects become important for
$M \lesssim 10$ GeV. It is found that the structure function $W_{TT}$ related
to the $A_2$ angular coefficient and the Lam--Tung observable $A_0 -A_2$ are
particularly sensitive to the gluon $k_T$ effects and to the higher twist
effects. A procedure is suggested how to disentangle the higher twist effects
from the gluon transverse momentum effects.Comment: 23 pages, 9 figure
One-Loop Transition Amplitudes in the D1D5 CFT

We consider the issue of thermalization in the D1D5 CFT. Thermalization is
expected to correspond to the formation of a black hole in the dual gravity
theory. We start from the orbifold point, where the theory is essentially free,
and does not thermalize. In earlier work it was noted that there was no clear
thermalization effect when the theory was deformed off the orbifold point to
first order in the relevant twist perturbation. In this paper we consider the
deformation to second order in the twist, where we do find effects that can
cause thermalization of an initial perturbation. We consider a 1-loop process
where two untwisted copies of the CFT are twisted to one copy and then again
untwisted to two copies. We start with a single oscillator excitation on the
initial CFT, and compute the effect of the two twists on this state. We find
simple approximate expressions for the Bogoliubov coefficients and the behavior
of the single oscillator excitation in the continuum limit, where the mode
numbers involved are taken to be much larger than unity. We also prove a number
of useful relationships valid for processes with an arbitrary number of twist
insertions.Comment: 58 pages, 4 figures, 2 table
The muon magnetic moment in the 2HDM: complete two-loop result

We study the 2HDM contribution to the muon anomalous magnetic moment and
present the complete two-loop result, particularly for the bosonic
contribution. We focus on the Aligned 2HDM, which has general Yukawa couplings
and contains the type I, II, X, Y models as special cases. The result is
expressed with physical parameters: three Higgs boson masses, Yukawa couplings,
two mixing angles, and one quartic potential parameter. We show that the result
can be split into several parts, each of which has a simple parameter
dependence, and we document their general behavior. Taking into account
constraints on parameters, we find that the full 2HDM contribution to the muon
anomalous magnetic moment can accommodate the current experimental value, and
the complete two-loop bosonic contribution can amount to (2...4)x10^{-10}, more
than the future experimental uncertainty
Note on recursion relations for the $\mathcal{Q}$-cut representation

In this note, we study the $\mathcal{Q}$-cut representation by combining it
with BCFW deformation. As a consequence, the one-loop integrand is expressed in
terms of a recursion relation, i.e., $n$-point one-loop integrand is
constructed using tree-level amplitudes and $m$-point one-loop integrands with
$m\leq n-1$. By giving explicit examples, we show that the integrand from the
recursion relation is equivalent to that from Feynman diagrams or the original
$\mathcal{Q}$-cut construction, up to scale free terms.Comment: 30 pages, 2 figure
Very Degenerate Higgsino Dark Matter

We present a study of the Very Degenerate Higgsino Dark Matter (DM), whose
mass splitting between the lightest neutral and charged components is ${\cal
O}$(1) MeV, much smaller than radiative splitting of 355 MeV. The scenario is
realized in the minimal supersymmetric standard model by small gaugino mixing.
In contrast to the pure Higgsino DM with the radiative splitting only, various
observable signatures with distinct features are induced. First of all, the
very small mass splitting makes (a) sizable Sommerfeld enhancement and
Ramsauer-Townsend (RT) suppression relevant to ~1 TeV Higgsino DM, and (b)
Sommerfeld-Ramsauer-Townsend effect saturate at lower velocities $v/c \lesssim
10^{-3}$. As a result, annihilation signals can be large enough to be observed
from the galactic center and/or dwarf galaxies, while relative signal sizes can
vary depending on the location of Sommerfeld peaks and RT dips. In addition, at
collider experiments, stable chargino signature can be searched for to probe
the model in the future. DM direct detection signal, however, depends on the
Wino mass; even no detectable signal can be induced if the Wino is heavier than
about 10 TeV.Comment: 19 pages, 4 figure
Matrix Quantum Mechanics from Qubits

We introduce a transverse field Ising model with order N^2 spins interacting
via a nonlocal quartic interaction. The model has an O(N,Z), hyperoctahedral,
symmetry. We show that the large N partition function admits a saddle point in
which the symmetry is enhanced to O(N). We further demonstrate that this
`matrix saddle' correctly computes large N observables at weak and strong
coupling. The matrix saddle undergoes a continuous quantum phase transition at
intermediate couplings. At the transition the matrix eigenvalue distribution
becomes disconnected. The critical excitations are described by large N matrix
quantum mechanics. At the critical point, the low energy excitations are waves
propagating in an emergent 1+1 dimensional spacetime.Comment: 28 pages + Appendices and References. 3 Figure
Mesons from (non) Abelian T-dual backgrounds

In this work we study mesonic excitations in a Quantum Field Theory dual to
the non Abelian T-dual of $AdS_5\times S^5$, using a D6 brane probe on the
Sfetsos-Thompson background. Before and after the duality, we observe
interesting differences between the spectra and interpret them. The spectrum of
masses and the interactions among mesonic excitations teach valuable lessons
about the character of non-Abelian T-duality and its implications for
Holography. The case of Abelian T-duality is also studied.Comment: 26 pages plus many long appendice
The Global Higgs as a Signal for Compositeness at the LHC

The radial excitation of the global symmetry-breaking vacuum in composite
Higgs models, called the "global Higgs", has been recently a focus of
investigation. In this paper we study the prospects for detecting this
composite scalar at the 13 TeV LHC. We compute the global Higgs production
rates and estimate the discovery potential of a global Higgs decaying into top
quark pairs and into Higgs and electroweak gauge bosons with subsequent
hadronic decays. The global Higgs may also decay into fermion resonances such
as top partners, providing a new window into compositeness. We show that top
partner jets can be effectively unresolved in some regions of the parameter
space. Such "boosted top partner" signatures would deserve the development of
dedicated substructure analyses.Comment: 27 pages, 7 figures. v2: Comments added. Matches JHEP versio
Topological solitons in the supersymmetric Skyrme model

A supersymmetric extension of the Skyrme model was obtained recently, which
consists of only the Skyrme term in the Nambu-Goldstone (pion) sector
complemented by the same number of quasi-Nambu-Goldstone bosons. Scherk-Schwarz
dimensional reduction yields a kinetic term in three or lower dimensions and a
potential term in two dimensions, preserving supersymmetry. Euclidean solitons
(instantons) are constructed in the supersymmetric Skyrme model. In four
dimensions, the soliton is an instanton first found by Speight. Scherk-Schwarz
dimensional reduction is then performed once to get a 3-dimensional theory in
which a 3d Skyrmion-instanton is found and then once more to get a 2d theory in
which a 2d vortex-instanton is obtained. Although the last one is a global
vortex it has finite action in contrast to conventional theory. All of them are
non-BPS states breaking all supersymmetries.Comment: LaTeX: 20 pages, 3 figures; V2: typos correcte
Simultaneous Explanation of the $R_K$ and $R_{D^{(*)}}$ Puzzles: a Model
  Analysis

$R_K$ and $R_{D^{(*)}}$ are two $B$-decay measurements that presently exhibit
discrepancies with the SM. Recently, using an effective field theory approach,
it was demonstrated that a new-physics model can simultaneously explain both
the $R_K$ and $R_{D^{(*)}}$ puzzles. There are two UV completions that can give
rise to the effective Lagrangian: (i) $VB$: a vector boson that transforms as
an $SU(2)_L$ triplet, as in the SM, (ii) $U_1$: an $SU(2)_L$-singlet vector
leptoquark. In this paper, we examine these models individually. A key point is
that $VB$ contributes to $B^0_s$-${\bar B}^0_s$ mixing and $\tau \to 3\mu$,
while $U_1$ does not. We show that, when constraints from these processes are
taken into account, the $VB$ model is just barely viable. It predicts ${\cal B}
(\tau^-\to\mu^-\mu^+\mu^-) \simeq 2.1 \times 10^{-8}$. This is measurable at
Belle II and LHCb, and therefore constitutes a smoking-gun signal of $VB$. For
$U_1$, there are several observables that may point to this model. Perhaps the
most interesting is the lepton-flavor-violating decay $\Upsilon(3S) \to \mu
\tau$, which has previously been overlooked in the literature. $U_1$ predicts
${\cal B}(\Upsilon(3S) \to \mu \tau)|_{\rm max} = 8.0 \times 10^{-7}$. Thus, if
a large value of ${\cal B}(\Upsilon(3S) \to \mu \tau)$ is observed -- and this
should be measurable at Belle II -- the $U_1$ model would be indicated.Comment: 33 pages, 4 figures; Version 3: Mistakes in code corrected, leading
  to modified results: VB model now just barely viable. Still, principal
  conclusions of the paper remain largely unchange
Flavor Universal Resonances and Warped Gravity

Warped higher-dimensional compactifications with "bulk" standard model, or
their AdS/CFT dual as the purely 4D scenario of Higgs compositeness and partial
compositeness, offer an elegant approach to resolving the electroweak hierarchy
problem as well as the origins of flavor structure. However, low-energy
electroweak/flavor/CP constraints and the absence of non-standard physics at
LHC Run 1 suggest that a "little hierarchy problem" remains, and that the new
physics underlying naturalness may lie out of LHC reach. Assuming this to be
the case, we show that there is a simple and natural extension of the minimal
warped model in the Randall-Sundrum framework, in which matter, gauge and
gravitational fields propagate modestly different degrees into the IR of the
warped dimension, resulting in rich and striking consequences for the LHC (and
beyond). The LHC-accessible part of the new physics is AdS/CFT dual to the
mechanism of "vectorlike confinement", with TeV-scale Kaluza-Klein excitations
of the gauge and gravitational fields dual to spin-0,1,2 composites. Unlike the
minimal warped model, these low-lying excitations have predominantly
flavor-blind and flavor/CP-safe interactions with the standard model.
Remarkably, this scenario also predicts small deviations from flavor-blindness
originating from virtual effects of Higgs/top compositeness at $\sim O(10)$
TeV, with subdominant resonance decays into Higgs/top-rich final states, giving
the LHC an early "preview" of the nature of the resolution of the hierarchy
problem. Discoveries of this type at LHC Run 2 would thereby anticipate (and
set a target for) even more explicit explorations of Higgs compositeness at a
100 TeV collider, or for next-generation flavor tests.Comment: 43 pages, 10 figure
Heavy Higgs Bosons at Low $\tan \beta$: from the LHC to 100 TeV

We present strategies to search for heavy neutral Higgs bosons decaying to
top quark pairs, as often occurs at low $\tan \beta$ in type II two Higgs
doublet models such as the Higgs sector of the MSSM. The resonant production
channel is unsatisfactory due to interference with the SM background. We
instead propose to utilize same-sign dilepton signatures arising from the
production of heavy Higgs bosons in association with one or two top quarks and
subsequent decay to a top pair. We find that for heavier neutral Higgs bosons
the production in association with one top quark provides greater sensitivity
than production in association with two top quarks. We obtain current limits at
the LHC using Run I data at 8 TeV and forecast the sensitivity of a dedicated
analysis during Run II at 14 TeV. Then we perform a detailed BDT study for the
14 TeV LHC and a future 100 TeV collider.Comment: published version, 22 pages, 15 figures, 3 table
Duality walls and defects in 5d N=1 theories

We propose an explicit description of duality walls which encode at low energy the global symmetry enhancement expected in the UV completion of certain five-dimensional gauge theories. The proposal is supported by explicit localization computations and implies that the instanton partition function of these theories satisfies novel and unexpected integral equations.We propose an explicit description of duality walls which encode at low energy the global symmetry enhancement expected in the UV completion of certain five-dimensional gauge theories. The proposal is supported by explicit localization computations and implies that the instanton partition function of these theories satisfies novel and unexpected integral equations.12
Diagonal Form Factors and Hexagon Form Factors II. Non-BPS Light
  Operator

We study the asymptotic volume dependence of the heavy-heavy-light
three-point functions in the $\mathcal{N}=4$ Super-Yang-Mills theory using the
hexagon bootstrap approach, where the volume is the length of the heavy
operator. We extend the analysis of our previous short letter 1511.06199 to the
general case where the heavy operators can be in any rank one sector and the
light operator being a generic non-BPS operator. We prove the conjecture of
Bajnok, Janik and Wereszczynski 1404.4556 up to leading finite size
corrections.Comment: typos corrected, references adde
$A_\infty / L_\infty$ structure and alternative action for WZW-like
  superstring field theory

We propose new gauge invariant actions for open NS, heterotic NS, and closed
NS-NS superstring field theories. They are based on the large Hilbert space,
and have Wess-Zumino-Witten-like expressions which are the
$\mathbb{Z}_{2}$-reversed versions of the conventional WZW-like actions. On the
basis of the procedure proposed in arXiv:1505.01659, we show that our new
WZW-like actions are completely equivalent to $A_{\infty }/L_{\infty }$ actions
proposed in arXiv:1403.0940 respectively.Comment: 23+21 pages; Published ve
D = 3 Unification of Curious Supergravities

We consider the dimensional reduction to D = 3 of four maximal-rank
supergravities which preserve minimal supersymmetry in D = 11, 7, 5 and 4. Such
"curious" theories were investigated some time ago, and the four-dimensional
one corresponds to an N = 1 supergravity with 7 chiral multiplets spanning the
seven-disk manifold. Recently, this latter theory provided cosmological models
for alpha-attractors, which are based on the disk geometry with possible
restrictions on the parameter alpha. A unified picture emerges in D = 3, where
the Ehlers group of General Relativity merges with the S-, T- and U- dualities
of the D = 4 parent theories.Comment: 1+7 pages; v2 : minor refinements, one Ref. added, matches published
  versio
Dark Matter Relic Abundance and Light Sterile Neutrinos

In this paper, we calculate the relic abundance of the dark matter particles
when they can annihilate into sterile neutrinos with the mass $\lesssim 100
\text{ GeV}$ in a simple model. Unlike the usual standard calculations, the
sterile neutrino may fall out of the thermal equilibrium with the thermal bath
before the dark matter freezes out. In such a case, if the Yukawa coupling
$y_N$ between the Higgs and the sterile neutrino is small, this process gives
rise to a larger $\Omega_{\text{DM}} h^2$ so we need a larger coupling between
the dark matter and the sterile neutrino for a correct relic abundance
Holographic Collisions in Non-conformal Theories

We numerically simulate gravitational shock wave collisions in a holographic
model dual to a non-conformal four-dimensional gauge theory. We find two novel
effects associated to the non-zero bulk viscosity of the resulting plasma.
First, the hydrodynamization time increases. Second, if the bulk viscosity is
large enough then the plasma becomes well described by hydrodynamics before the
energy density and the average pressure begin to obey the equilibrium equation
of state. We discuss implications for the quark-gluon plasma created in heavy
ion collision experiments.Comment: 10 pages, 3 figures; published versio
Identifying a new particle with jet substructures

We investigate a potential of measuring properties of a heavy resonance X,
exploiting jet substructure techniques. Motivated by heavy higgs boson
searches, we focus on the decays of X into a pair of (massive) electroweak
gauge bosons. More specifically, we consider a hadronic Z boson, which makes it
possible to determine properties of X at an earlier stage. For $m_X$ of O(1)
TeV, two quarks from a Z boson would be captured as a "merged jet" in a
significant fraction of events. The use of the merged jet enables us to
consider a Z-induced jet as a reconstructed object without any combinatorial
ambiguity. We apply a conventional jet substructure method to extract
four-momenta of subjets from a merged jet. We find that jet substructure
procedures may enhance features in some kinematic observables formed with
subjets. Subjet momenta are fed into the matrix element associated with a given
hypothesis on the nature of X, which is further processed to construct a matrix
element method (MEM)-based observable. For both moderately and highly boosted Z
bosons, we demonstrate that the MEM with current jet substructure techniques
can be a very powerful discriminator in identifying the physics nature of X. We
also discuss effects from choosing different jet sizes for merged jets and
jet-grooming parameters upon the MEM analyses.Comment: 36 pages, 11 figures, published in JHE
A differential operator for integrating one-loop scattering equations

We propose a differential operator for computing the residues associated with
a class of meromorphic $n$-forms that frequently appear in the Cachazo-He-Yuan
form of the scattering amplitudes. This differential operator is conjectured to
be uniquely determined by the local duality theorem and the intersection number
of the divisors in the $n$-form. We use the operator to evaluate the tree-level
amplitude of $\phi^3$ theory and the one-loop integrand of Yang-Mills theory
from their CHY forms. The method can reduce the complexity of the calculation.
In addition, the expression for the 1-loop four-point Yang-Mills integrand
obtained in our approach has a clear correspondence with the Q-cut results.Comment: 37 page
Spinning Kerr black holes with stationary massive scalar clouds: The
  large-coupling regime

We study analytically the Klein-Gordon wave equation for stationary massive
scalar fields linearly coupled to spinning Kerr black holes. In particular,
using the WKB approximation, we derive a compact formula for the discrete
spectrum of scalar field masses which characterize the stationary composed
Kerr-black-hole-massive-scalar-field configurations in the large-coupling
regime $M\mu\gg1$ (here $M$ and $\mu$ are respectively the mass of the central
black hole and the proper mass of the scalar field). We confirm our
analytically derived formula for the Kerr-scalar-field mass spectrum with
numerical data that recently appeared in the literature.Comment: 7 page
Non-abelian $Z$-theory: Berends-Giele recursion for the
  $\alpha'$-expansion of disk integrals

We present a recursive method to calculate the $\alpha'$-expansion of disk
integrals arising in tree-level scattering of open strings which resembles the
approach of Berends and Giele to gluon amplitudes. Following an earlier
interpretation of disk integrals as doubly partial amplitudes of an effective
theory of scalars dubbed as $Z$-theory, we pinpoint the equation of motion of
$Z$-theory from the Berends-Giele recursion for its tree amplitudes. A computer
implementation of this method including explicit results for the recursion up
to order $\alpha'^7$ is made available on the website
http://repo.or.cz/BGap.gitComment: 58 pages, harvmac TeX, v2: cosmetic changes, published versio