pinecone/core-2020-05-10-deduplication huggingface dataset:
A Stealth Supersymmetry Sampler

The LHC has strongly constrained models of supersymmetry with traditional missing energy signatures. We present a variety of models that realize the concept of Stealth Supersymmetry, i.e. models with R-parity in which one or more nearly-supersymmetric particles (a “stealth sector”) lead to collider signatures with only a small amount of missing energy. The simplest realization involves low-scale supersymmetry breaking, with an R-odd particle decaying to its superpartner and a soft gravitino. We clarify the stealth mechanism and its differences from compressed supersymmetry and explain the requirements for stealth models with high-scale supersymmetry breaking, in which the soft invisible particle is not a gravitino. We also discuss new and distinctive classes of stealth models that couple through a baryon portal or Z′ gauge interactions. Finally, we present updated limits on stealth supersymmetry in light of current LHC searches.Physic
Soft triple-real radiation for Higgs production at N3LO.\ud

We present the two first terms in the threshold expansion of Higgs production partonic cross-sections at hadron colliders for processes with three partons in the final state. These are contributions to the inclusive Higgs cross-section in gluon fusion at N3LO. We have developed a new technique for the expansion of the squared matrix-elements around the soft limit and for the reduction of the required phase-space integrals to only ten single-scale master integrals. We compute the master integrals building upon modern techniques for the integration of multidimensional integrals in dimensional regularization. Our results constitute an important step towards a systematic computation of the Higgs boson cross-section as an expansion around the threshold limit
Thermodynamics of the O(3) model in 1+1 dimensions: lattice vs.
  analytical results

A detailed study of the thermodynamics of the O(N=3) model in 1+1 dimensions
is presented, employing a two-particle-irreducible resummation prescription as
well as fully nonperturbative finite-temperature lattice simulations. The
analytical results are computed using the Cornwall-Jackiw-Tomboulis (CJT)
formalism and the auxiliary field method to one- and to two-loop order. The
lattice results are obtained through Monte Carlo simulation for various lattice
spacings. The analytical and lattice results for pressure, trace anomaly, and
energy density, resembling closely those of four-dimensional Yang-Mills
theories, are compared with each other. We find that to one-loop order there is
a good correspondence between the CJT formalism and the lattice study for low
temperatures. However, at high T the two-loop calculation fares better,
correcting for the overestimation from the former approximation.Comment: 29 pages, 7 figures; version accepted for publication in Journal of
  High-Energy Physics (JHEP
Two-loop low-energy effective actions in N=2 and N=4 three-dimensional
  SQED

We study two-loop Euler-Heisenberg effective actions in three-dimensional N=2
and N=4 supersymmetric quantum electrodynamics (SQED) without Chern-Simons
term. We find exact expressions for propagators of chiral superfields
interacting with slowly-varying N=2 gauge superfield. Using these propagators
we compute two-loop effective actions in the N=2 and N=4 SQED as the
functionals of superfield strengths and their covariant spinor derivatives. The
obtained effective actions contain new terms having no four-dimensional
analogs. As an application, we find two-loop quantum corrections to the moduli
space metric in the N=2 SQED.Comment: 1+33 pages, v2: minor changes; v3: reference adde
Central force problem in space with SU(2) Poisson structure

The central force problem is considered in a three dimensional space in which
the Poisson bracket among the spatial coordinates is the one by the SU(2) Lie
algebra. It is shown that among attractive power-law potentials it is only the
Kepler one that all of its bound-states make closed orbits. The analytic
solution of the path equation under the Kepler potential is presented. It is
shown that except the Kepler potential, in contrast to ordinary space, all of
the potentials for which all of the almost circular orbits are closed are
non-power-law ones. For the non-power-law potentials examples of the numerical
solutions of the path equations are presented.Comment: 18 pages, 6 fig
Periodically Driven Holographic Superconductor

As a first step towards our holographic investigation of the
far-from-equilibrium physics of periodically driven systems at strong coupling,
we explore the real time dynamics of holographic superconductor driven by a
monochromatically alternating electric field with various frequencies. As a
result, our holographic superconductor is driven to the final oscillating
state, where the condensate is suppressed and the oscillation frequency is
controlled by twice of the driving frequency. In particular, in the large
frequency limit, the three distinct channels towards the final steady state are
found, namely under damped to superconducting phase, over damped to
superconducting and normal phase, which can be captured essentially by the low
lying spectrum of quasi-normal modes in the time averaged approximation,
reminiscent of the effective field theory perspective.Comment: JHEP style, 1+18 pages, 10 figures, version to appear in JHE
On Singular Fibres in F-Theory

In this paper, we propose a connection between the field theory local model
(Katz-Vafa field theory) and the type of singular fibre in flat crepant
resolutions of elliptic Calabi-Yau fourfolds, a class of fourfolds considered
by Esole and Yau. We review the analysis of degenerate fibres for models with
gauge groups SU(5) and SO(10) in detail, and observe that the naively expected
fibre type is realized if and only if the Higgs vev in the field theory local
model is unramified. To test this idea, we implement a linear (unramified)
Higgs vev for the `E6' Yukawa point in a model with gauge group SU(5) and
verify that this indeed leads to a fibre of Kodaira type IV*. Based on this
observation, we argue i) that the singular fibre types appearing in the
fourfolds studied by Esole-Yau are not puzzling at all, (so that this class of
fourfolds does not have to be excluded from the candidate of input data of some
yet-unknown formulation of F-theory) and ii) that such fourfold geometries also
contain more information than just the eigenvalues of the Higgs field vev
configuration in the field theory local models.Comment: 35 pages, 10 figures, v2: fixed typos, added clarifying remark
LHC constraints on two-Higgs doublet models

A new Higgs-like boson with mass around 126 GeV has recently been discovered at the LHC. The available data on this new particle is analyzed within the context of two-Higgs doublet models without tree-level flavour-changing neutral currents. Keeping the generic Yukawa structure of the Aligned Two-Higgs Doublet Model framework, we study the implications of the LHC data on the allowed scalar spectrum. We analyze both the CP-violating and CP-conserving cases, and a few particular limits with a reduced number of free parameters, such as the usual models based on discrete Z2 symmetries
All complete intersection Calabi-Yau four-folds

We present an exhaustive, constructive, classification of the Calabi-Yau four-folds which can be described as complete intersections in products of projective spaces. A comprehensive list of 921,497 configuration matrices which represent all topologically distinct types of complete intersection Calabi-Yau four-folds is provided and can be downloaded here. The manifolds have non-negative Euler characteristics in the range 0 <= chi <= 2610. This data set will be of use in a wide range of physical and mathematical applications. Nearly all of these four-folds are elliptically fibered and are thus of interest for F-theory model building.NSF/CCF-1048082EC/FP6/MRTN-CT-2004-503369EPSRC/EP/l02784X/
Supersymmetric M5 Brane Theories on R x CP2

We propose 4 and 12 supersymmetric Yang-Mills-Chern-Simons theories on R×CP2 obtained by twisted Zk moddings and dimensional reduction of the 6d (2,0) superconformal field theories on R×S5. These theories have a discrete coupling constant 1g2YM=k4π2 so that instantons represent the Kaluza-Klein modes correctly. We calculate the perturbative part of the SU(N) gauge group Euclidean path integral for the index function and confirm it with the known half-BPS index. The scalar and fermionic fields have the conformal dimension prescribed by the 6d theory. From the similar twisted Zk modding of the AdS7×S4 geometry, we speculate that the M region is for k≲N1/3 and the type IIA region is N1/3≲k≲N. When nonperturbative corrections are included, our theory is expected to produce the full index of the 6d (2,0) theory.We propose 4 and 12 supersymmetric Yang-Mills-Chern-Simons theories on R×CP2 obtained by twisted Zk moddings and dimensional reduction of the 6d (2,0) superconformal field theories on R×S5. These theories have a discrete coupling constant 1g2YM=k4π2 so that instantons represent the Kaluza-Klein modes correctly. We calculate the perturbative part of the SU(N) gauge group Euclidean path integral for the index function and confirm it with the known half-BPS index. The scalar and fermionic fields have the conformal dimension prescribed by the 6d theory. From the similar twisted Zk modding of the AdS7×S4 geometry, we speculate that the M region is for k≲N1/3 and the type IIA region is N1/3≲k≲N. When nonperturbative corrections are included, our theory is expected to produce the full index of the 6d (2,0) theory.12
Phenomenology of Minimal Unified Tree Level Gauge Mediation at the LHC

We study the collider phenomenology of the minimal unified version of the supersymmetry breaking scheme called Tree-level Gauge Mediation. We identify a peculiar source of gaugino mass non-universality related to the necessary SU(5)-breaking in the light fermion mass ratios and a gaugino mass sum rule at the GUT scale, 3 M_2 + 2 M_3 = 5 M_1, which represents a smoking gun of this scenario, together with the known tree-level sfermion mass ratio \tilde m_{d^c,l} = \sqrt{2} \tilde m_{q,u^c,e^c}. The boundary conditions of the soft SUSY breaking terms can be parameterised in terms of six relevant parameters only (plus the sign of the \mu-parameter). We analyze the parameter space and define three benchmark points, corresponding to the three possible NLSPs, a bino- or wino-like neutralino or the stau. The LSP is the gravitino as in gauge mediation. For these benchmark points we show possible signatures at the LHC focusing on the Razor variable. We also comment on the Higgs mass
Aspects of 3d N=2 Chern-Simons-Matter Theories

We comment on various aspects of the the dynamics of 3d N=2 Chern-Simons
gauge theories and their possible phases. Depending on the matter content, real
masses and FI parameters, there can be non-compact Higgs or Coulomb branches,
compact Higgs or Coulomb branches, and isolated vacua. We compute the Witten
index of the theories, and show that it does not change when the system
undergoes a phase transition. We study aspects of monopole operators and
solitons in these theories, and clarify subtleties in the soliton collective
coordinate quantization. We show that solitons are compatible with a mirror
symmetry exchange of Higgs and Coulomb branches, with BPS solitons on one
branch related to the modulus of the other. Among other results, we show how to
derive Aharony duality from Giveon-Kutasov duality.Comment: 76 pages, 1 figure. v2: added reference
Light-cone Wilson loop in classical lattice gauge theory

The transverse broadening of an energetic jet passing through a non-Abelian plasma is believed to be described by the thermal expectation value of a light-cone Wilson loop. In this exploratory study, we measure the light-cone Wilson loop with classical lattice gauge theory simulations. We observe, as suggested by previous studies, that there are strong interactions already at short transverse distances, which may lead to more efficient jet quenching than in leading-order perturbation theory. We also verify that the asymptotics of the Wilson loop do not change qualitatively when crossing the light cone, which supports arguments in the literature that infrared contributions to jet quenching can be studied with dimensionally reduced simulations in the space-like domain. Finally we speculate on possibilities for full four-dimensional lattice studies of the same observable, perhaps by employing shifted boundary conditions in order to simulate ensembles boosted by an imaginary velocity
Addendum: search for ν μ → ν e oscillations with the OPERA experiment in the CNGS beam

A first result of the search for ν ( )μ( ) → ν ( )e( ) oscillations in the OPERA experiment, located at the Gran Sasso Underground Laboratory, is presented. The experiment looked for the appearance of ν ( )e( ) in the CNGS neutrino beam using the data collected in 2008 and 2009. Data are compatible with the non-oscillation hypothesis in the three-flavour mixing model. A further analysis of the same data constrains the non-standard oscillation parameters θ (new) and suggested by the LSND and MiniBooNE experiments. For large values (>0.1 eV(2)), the OPERA 90% C.L. upper limit on sin(2)(2θ (new)) based on a Bayesian statistical method reaches the value 7.2 × 10(−3)
Subtracted Geometry from Harrison Transformations: II

We extend our previous study (arXiv:1203.5088) to the case of
five-dimensional multi-charge black holes, thus showing that these
configurations and their subtracted geometries also lie in a 3d duality orbit.
In order to explore the 3d duality orbit, we do a timelike reduction from 5d to
4d and a spacelike reduction from 4d to 3d. We present our analysis in the
notation of Euclidean N=2 supergravity and its c-map. We also relate our
analysis to that of Cveti\v{c}, Guica, and Saleem.Comment: 18 pages, no figures; v2: a typo in equation (3.18) fixed, no other
  change
Do leptoquarks manifest themselves in ultra-high energy neutrino
  interactions?

It is assumed that neutrino-nucleon scattering at ultra-high energies
effectively proceeds through excitations of leptoquarks in neutrino-quark
subprocesses. This approach reproduces the behavior of the energy dependence of
the ultra-high energy neutrino-nucleon scattering cross sections and allows to
estimate masses as well as the decay widths of the involved leptoquarks. For
instance, this leads to the leptoquark mass $1353\pm230$ GeV in a way
independent on the leptoquark quantum numbers. The discovery potential of the
LHC for the leptoquarks is evaluated.Comment: 14 pages, 5 figures. Version accepted for publication in JHE
Markov Chain Mote Carlo solution of BK equation through
  Newton-Kantorovich method

We propose a new method for Monte Carlo solution of non-linear integral
equations by combining the Newton-Kantorovich method for solving non-linear
equations with the Markov Chain Monte Carlo (MCMC) method for solving linear
equations. The Newton-Kantorovich method allows to express the non-linear
equation as a system of the linear equations which then can be treated by the
MCMC (random walk) algorithm. We apply this method to the Balitsky-Kovchegov
(BK) equation describing evolution of gluon density at low x. Results of
numerical computations show that the MCMC method is both precise and efficient.
The presented algorithm may be particularly suited for solving more complicated
and higher-dimensional non-linear integral equation, for which traditional
methods become unfeasible.Comment: 10 pages, 2 figures, typos corrected, accepted by JHE
Thermodynamics of black M-branes from SCFTs

We discuss thermodynamics of N M2-branes at strong coupling from the ABJM
theory by employing the Smilga-Wiseman method, which explains the black
Dp-brane thermodynamics from the maximally supersymmetric U(N) Yang-Mills
theories through a field theory analysis. As a result we obtain the free energy
of the ABJM theory ~N^{3/2}k^{1/2}T^3, which is consistent with the prediction
from eleven-dimensional supergravity. We also estimate the free energy of N
M5-branes by assuming some natural properties of the 6d superconformal field
theory. Remarkably we obtain the free energy ~N^3T^6, which is consistent again
with the supergravity prediction. This result might illuminate the low energy
field theory description of the multiple M5-branes.Comment: 1+19 pages, v2: new section 5 and references added, v3: minor
  corrections and a reference added, v4: minor correction
The Bootstrap Program for Boundary CFT_d

We study the constraints of crossing symmetry and unitarity for conformal
field theories in the presence of a boundary, with a focus on the Ising model
in various dimensions. We show that an analytic approach to the bootstrap is
feasible for free-field theory and at one loop in the epsilon expansion, but
more generally one has to resort to numerical methods. Using the recently
developed linear programming techniques we find several interesting bounds for
operator dimensions and OPE coefficients and comment on their physical
relevance. We also show that the "boundary bootstrap" can be easily applied to
correlation functions of tensorial operators and study the stress tensor as an
example. In the appendices we present conformal block decompositions of a
variety of physically interesting correlation functions.Comment: 60 pages, 12 figures. v2: minor update to conclusions, added
  reference
Quantum Entanglement on Boundaries

Quantum entanglement in 3 spatial dimensions is studied in systems with
physical boundaries when an entangling surface intersects the boundary. We show
that there are universal logarithmic boundary terms in the entanglement
R\'{e}nyi entropy and derive them for different conformal field theories and
geometrical configurations. The paper covers such topics as spectral geometry
on manifolds with conical singularities crossing the boundaries, the dependence
of the entanglement entropy on mutual position of the boundary and the
entangling surface, effects of acceleration and rotation of the boundary,
relations of coefficients in the trace anomaly to coefficients in the boundary
logarithmic terms in the entropy. The computations are done for scalar, spinor
and gauge fields.Comment: 25 pages, 3 figure
The impact of heavy-quark loops on LHC dark matter searches

If only tree-level processes are included in the analysis, LHC monojet
searches give weak constraints on the dark matter-proton scattering cross
section arising from the exchange of a new heavy scalar or pseudoscalar
mediator with Yukawa-like couplings to quarks. In this letter we calculate the
constraints on these interactions from the CMS 5.0/fb and ATLAS 4.7/fb searches
for jets with missing energy including the effects of heavy-quark loops. We
find that the inclusion of such contributions leads to a dramatic increase in
the predicted cross section and therefore a significant improvement of the
bounds from LHC searches.Comment: 12 pages, 1 table, 3 figures, v2: extended discussion and improved
  relic density calculation - matches published versio
New actions for modified gravity and supergravity

We extend the f (R) gravity action by including a generic dependence upon the Weyl tensor, and further generalize it to supergravity by using the super-curvature R and super-Weyl W chiral superfields in N = 1 chiral curved superspace. We argue that our (super)gravitational actions are the meaningful extensions of the phenomenological f(R) gravity and its locally supersymmetric generalization towards their UV completion and their embedding into superstring theories. The proposed actions can be used for study of cosmological perturbations and gravitational instabilities due to a nonvanishing Weyl tensor in gravity and supergravity
Analytic results for planar three-loop four-point integrals from a
  Knizhnik-Zamolodchikov equation

We apply a recently suggested new strategy to solve differential equations
for master integrals for families of Feynman integrals. After a set of master
integrals has been found using the integration-by-parts method, the crucial
point of this strategy is to introduce a new basis where all master integrals
are pure functions of uniform transcendentality. In this paper, we apply this
method to all planar three-loop four-point massless on-shell master integrals.
We explicitly find such a basis, and show that the differential equations are
of the Knizhnik-Zamolodchikov type. We explain how to solve the latter to all
orders in the dimensional regularization parameter epsilon, including all
boundary constants, in a purely algebraic way. The solution is expressed in
terms of harmonic polylogarithms. We explicitly write out the Laurent expansion
in epsilon for all master integrals up to weight six.Comment: 26 pages, 6 figures; v2: minor changes, typos in Eqs. (2.34) and
  (2.35) fixe
Renormalization of vacuum expectation values in spontaneously broken
  gauge theories

We compute one-loop and two-loop beta-functions for vacuum expectation values
(VEVs) in gauge theories. In R_xi gauge the VEVs renormalize differently from
the respective scalar fields. We focus particularly on the origin and behavior
of this difference and show that it can be interpreted as the anomalous
dimension of a certain scalar background field, leading to simple direct
computation and qualitative understanding. The results are given for generic as
well as supersymmetric gauge theories. These complement the set of well-known
gamma- and beta-functions of Machacek/Vaughn. As an application, we compute the
beta-functions for VEVs and tan(beta) in the MSSM, NMSSM and E6SSM.Comment: 16 pages, 2 figures, v2 added definition of ghost, auxiliary, and
  exotic colored E6SSM fields, v2 accepted for publication in JHEP, v3
  corrected missing factor 2 in beta(vu) and beta(vd) in the E6SS
Further studies on holographic insulator/superconductor phase
  transitions from Sturm-Liouville eigenvalue problems

We take advantage of the Sturm-Liouville eigenvalue problem to analytically
study the holographic insulator/superconductor phase transition in the probe
limit. The interesting point is that this analytical method can not only
estimate the most stable mode of the phase transition, but also the second
stable mode. We find that this analytical method perfectly matches with other
numerical methods, such as the shooting method. Besides, we argue that only
Dirichlet boundary condition of the trial function is enough under certain
circumstances, which will lead to a more precise estimation. This relaxation
for the boundary condition of the trial function is first observed in this
paper as far as we know.Comment: 16 page, 4 figures, minor corrections made and Refs. adde
Higher Spin Currents with Arbitrary N in the N=1 Stringy Coset Minimal
  Model

In the N=1 supersymmetric coset model based on (A_{N-1}^{(1)} \oplus
A_{N-1}^{(1)}, A_{N-1}^{(1)}) at level (k, N), the lowest N=1 higher spin
supercurrent with spins-(5/2, 3), in terms of two independent numerator WZW
currents, is reviewed. By calculating the operator product expansions (OPE)
between this N=1 higher spin supercurrent and itself, the next two N=1 higher
spin supercurrents can be generated with spins-(7/2, 4) and (4, 9/2). These
four currents are polynomials of degree 3, 4, 4, 4 in the first numerator WZW
currents with level k. The complete nonlinear OPE of the lowest N=1 higher spin
supercurrent for general N is obtained. The three-point functions involving two
scalar primaries with one spin-2 current or spin-3 current are calculated in
the large N limit for all values of the 't Hooft coupling. In particular, the
light states that appeared in the case when the second level was fixed by 1 are
no longer light ones because the eigenvalues are finite in the large N limit.Comment: 56 page