pinecone/core-2020-05-10-deduplication huggingface dataset:
A composite Higgs model analysis of forward-backward asymmetries in the
  production of tops at Tevatron and bottoms at LEP and SLC

We perform a joint analysis of the prediction of composite Higgs models for
the discrepancies of the forward-backward asymmetries of top and bottom quarks
at Tevatron and LEP+SLC, respectively. We build a two sector model which can be
thought as an effective low energy description of 5D warped models and choose
the quantum numbers of the fermionic resonances to protect the Z-couplings of
the partially composite Standard Model light quarks. We analyze the cross
section, forward-backward asymmetry and invariant mass distribution of the top
anti-top production at Tevatron, as well as the bottom forward-backward
asymmetry and the Z-branching fraction into b-quarks at LEP and SLC, for the
two sector model. In the region of the parameter space that naturally leads to
the Standard Model spectrum and solves the bottom anomaly, the model improves
the top forward-backward asymmetry, giving a prediction of up to 10%, and
predicts a small decrease of the $t \bar t$ cross section. It also predicts
non-universal corrections of the Z-couplings to the light quarks of order
0.001.Comment: 23 pages, 7 figures. Minor modifications (mainly check of unitary
  constraints and cites). Final version, as appears in JHE
More Three Dimensional Mirror Pairs

We found a lot of new three dimensional N = 4 mirror pairs generalizing
previous considerations on three dimensional generalized quiver gauge theories.
We recovered almost all previous discovered mirror pairs with these
constructions. One side of these mirror pairs are always the conventional
quiver gauge theories. One of our result can also be used to determine the
matter content and weakly coupled gauge groups of four dimensional N = 2
generalized quiver gauge theories derived from six dimensional A_N and D_N
theory, therefore we explicitly constructed four dimensional S-duality pairs.Comment: 33 pages, 18 figures version2 minor correction
Derrick's theorem beyond a potential

Scalar field theories with derivative interactions are known to possess
solitonic excitations, but such solitons are generally unsatisfactory because
the effective theory fails precisely where nonlinearities responsible for the
solitons are important. A new class of theories possessing (internal) galilean
invariance can in principle bypass this difficulty. Here, we show that these
galileon theories do not possess stable solitonic solutions. As a by-product,
we show that no stable solitons exist for a different class of derivatively
coupled theories, describing for instance the infrared dynamics of superfluids,
fluids, solids and some k-essence models.Comment: 4 page
New and old N=8 superconformal field theories in three dimensions

We show that an infinite family of N=6 d=3 superconformal Chern-Simons-matter
theories has hidden N=8 superconformal symmetry and hidden parity on the
quantum level. This family of theories is different from the one found by
Aharony, Bergman, Jafferis and Maldacena, as well as from the theories
constructed by Bagger and Lambert, and Gustavsson. We also test several
conjectural dualities between BLG theories and ABJ theories by comparing
superconformal indices of these theories.Comment: 16 pages, late
Testing matter effects in propagation of atmospheric and long-baseline
  neutrinos

We quantify our current knowledge of the size and flavor structure of the
matter effects in the evolution of atmospheric and long-baseline neutrinos
based solely on the analysis of the corresponding neutrino data. To this aim we
generalize the matter potential of the Standard Model by rescaling its
strength, rotating it away from the e-e sector, and rephasing it with respect
to the vacuum term. This phenomenological parametrization can be easily
translated in terms of non-standard neutrino interactions in matter. We show
that in the most general case, the strength of the potential cannot be
determined solely by atmospheric and long-baseline data. However its flavor
composition is very much constrained and the present determination of the
neutrino masses and mixing is robust under its presence. We also present an
update of the constraints arising from this analysis in the particular case in
which no potential is present in the e-mu and e-tau sectors. Finally we
quantify to what degree in this scenario it is possible to alleviate the
tension between the oscillation results for neutrinos and antineutrinos in the
MINOS experiment and show the relevance of the high energy part of the spectrum
measured at MINOS.Comment: PDFLaTeX file using JHEP3 class, 25 pages, 7 figures included.
  Accepted for publication in JHE
The stransverse mass, MT2, in special cases

This document describes some special cases in which the stransverse mass,
MT2, may be calculated by non-iterative algorithms. The most notable special
case is that in which the visible particles and the hypothesised invisible
particles are massless -- a situation relevant to its current usage in the
Large Hadron Collider as a discovery variable, and a situation for which no
analytic answer was previously known. We also derive an expression for MT2 in
another set of new (though arguably less interesting) special cases in which
the missing transverse momentum must point parallel or anti parallel to the
visible momentum sum. In addition, we find new derivations for already known
MT2 solutions in a manner that maintains manifest contralinear boost invariance
throughout, providing new insights into old results. Along the way, we stumble
across some unexpected results and make conjectures relating to geometric forms
of M_eff and H_T and their relationship to MT2.Comment: 11 pages, no figures. v2 corrects minor typos. v3 corrects an
  incorrect statement in footnote 8 and inserts a missing term in eq (3.9). v4
  and v5 correct minor typos spotted by reader
On the gauge boson's properties in a candidate technicolor theory

The technicolor scenario replaces the Higgs sector of the standard model with
a strongly interacting sector. One candidate for a realization of such a sector
is two-technicolor Yang-Mills theory coupled to two degenerate flavors of
adjoint, massless techniquarks. Using lattice gauge theory the properties of
the technigluons in this scenario are investigated as a function of the
techniquark mass towards the massless limit. For that purpose the minimal
Landau gauge two-point and three-point correlation functions are determined,
including a detailed systematic error analysis. The results are, within the
relatively large systematic uncertainties, compatible with a behavior very
similar to QCD at finite techniquark mass. However, the limit of massless
techniquarks exhibits features which could be compatible with a
(quasi-)conformal behavior.Comment: 27 pages, 17 figures, 1 table; v2: persistent notational error
  corrected, some minor modification
Anomaly mediated SUSY breaking scenarios in the light of cosmology and
  in the dark (matter)

Anomaly mediation is a popular and well motivated supersymmetry breaking
scenario. Different possible detailed realisations of this set-up are studied
and actively searched for at colliders. Apart from limits coming from flavour,
low energy physics and direct collider searches, these models are usually
constrained by the requirement of reproducing the observations on dark matter
density in the universe. We reanalyse these bounds and in particular we focus
on the dark matter bounds both considering the standard cosmological model and
alternative cosmological scenarios. These scenarios do not change the
observable cosmology but relic dark matter density bounds strongly depend on
them. We consider few benchmark points excluded by standard cosmology dark
matter bounds and suggest that loosening the dark matter constraints is
necessary in order to avoid a too strong (cosmological) model dependence in the
limits that are obtained for these models. We also discuss briefly the
implications for phenomenology and in particular at the Large Hadron Collider.Comment: 37 pages, 20 figures, 1 tabl
Moduli-Induced Vacuum Destabilisation

We look for ways to destabilise the vacuum. We describe how dense matter
environments source a contribution to moduli potentials and analyse the
conditions required to initiate either decompactification or a local shift in
moduli vevs. We consider astrophysical objects such as neutron stars as well as
cosmological and black hole singularities. Regrettably neutron stars cannot
destabilise realistic Planck coupled moduli, which would require objects many
orders of magnitude denser. However gravitational collapse, either in
matter-dominated universes or in black hole formation, inevitably leads to a
destabilisation of the compact volume causing a super-inflationary expansion of
the extra dimensions.Comment: 21 pages, 12 figure
Anomalous transport coefficients from Kubo formulas in Holography

In the presence of dense matter quantum anomalies give rise to two new
transport phenomena. An anomalous current is generated either by an external
magnetic field or through vortices in the fluid carrying the anomalous charge.
The associated transport coefficients are the anomalous magnetic and vortical
conductivities. Whereas a Kubo formula for the anomalous magnetic conductivity
is well known we develop a new Kubo type formula that allows the calculation of
the vortical conductivity through a two point function of the anomalous current
and the momentum density. We also point out that the anomalous vortical
conductivity can be understood as a response to a gravitomagnetic field. We
apply these Kubo formulas to a simple Holographic system, the R-charged black
hole.Comment: 28 pages, 3 figures. Final version published on JHE
Comments on the Mirror TBA

We discuss various aspects of excited state TBA equations describing the
energy spectrum of the AdS_5 \times S^5 strings and, via the AdS/CFT
correspondence, the spectrum of scaling dimensions of N = 4 SYM local
operators. We observe that auxiliary roots which are used to partially
enumerate solutions of the Bethe-Yang equations do not play any role in
engineering excited state TBA equations via the contour deformation trick. We
further argue that the TBA equations are in fact written not for a particular
string state but for the whole superconformal multiplet, and, therefore, the
psu(2,2|4) invariance is built in into the TBA construction.Comment: 28 pages, 1 figure, v2: misprints are correcte
Suppressing Electroweak Precision Observables in 5D Warped Models

We elaborate on a recently proposed mechanism to suppress large contributions
to the electroweak precision observables in five dimensional (5D) warped
models, without the need for an extended 5D gauge sector. The main ingredient
is a modification of the AdS metric in the vicinity of the infrared (IR) brane
corresponding to a strong deviation from conformality in the IR of the 4D
holographic dual. We compute the general low energy effective theory of the 5D
warped Standard Model, emphasizing additional IR contributions to the wave
function renormalization of the light Higgs mode. We also derive expressions
for the S and T parameters as a function of a generic 5D metric and zero-mode
wave functions. We give an approximate formula for the mass of the radion that
works even for strong deviation from the AdS background. We proceed to work out
the details of an explicit model and derive bounds for the first KK masses of
the various bulk fields. The radion is the lightest new particle although its
mass is already at about 1/3 of the mass of the lightest resonances, the KK
states of the gauge bosons. We examine carefully various issues that can arise
for extreme choices of parameters such as the possible reintroduction of the
hierarchy problem, the onset of nonperturbative physics due to strong IR
curvature or the creation of new hierarchies near the Planck scale. We conclude
that a KK scale of 1 TeV is compatible with all these constraints.Comment: 44 pages, 11 figures, references adde
Supersymmetric mass spectra and the seesaw scale

Supersymmetric mass spectra within two variants of the seesaw mechanism, commonly known as type-II and type-III seesaw, are calculated using full 2-loop RGEs and minimal Supergravity boundary conditions. The type-II seesaw is realized using one pair of 15 and (15) over bar superfields, while the type-III is realized using three copies of 24(M) superfields. Using published, estimated errors on SUSY mass observables attainable at the LHC and in a combined LHC+ILC analysis, we calculate expected errors for the parameters of the models, most notably the seesaw scale. If SUSY particles are within the reach of the ILC, pure mSugra can be distinguished from mSugra plus type-II or type-III seesaw for nearly all relevant values of the seesaw scale. Even in the case when only the much less accurate LHC measurements are used, we find that indications for the seesaw can be found in favourable parts of the parameter space. Since our conclusions crucially depend on the reliability of the theoretically forecasted error bars, we discuss in some detail the accuracies which need to be achieved for the most important LHC and ILC observables before an analysis, such as the one presented here, can find any hints for type-II or type-III seesaw in SUSY spectra
Unifying N=5 and N=6

We write the Lagrangian of the general N=5 three-dimensional superconformal
Chern-Simons theory, based on a basic Lie superalgebra, in terms of our
recently introduced N=5 three-algebras. These include N=6 and N=8
three-algebras as special cases. When we impose an antisymmetry condition on
the triple product, the supersymmetry automatically enhances, and the N=5
Lagrangian reduces to that of the well known N=6 theory, including the ABJM and
ABJ models.Comment: 19 pages. v2: Published version. Minor typos corrected, references
  adde
BKM Lie superalgebras from counting twisted CHL dyons

Following Sen[arXiv:0911.1563], we study the counting of (`twisted') BPS
states that contribute to twisted helicity trace indices in four-dimensional
CHL models with N=4 supersymmetry. The generating functions of half-BPS states,
twisted as well as untwisted, are given in terms of multiplicative eta products
with the Mathieu group, M_{24}, playing an important role. These multiplicative
eta products enable us to construct Siegel modular forms that count twisted
quarter-BPS states. The square-roots of these Siegel modular forms turn out be
precisely a special class of Siegel modular forms, the dd-modular forms, that
have been classified by Clery and Gritsenko[arXiv:0812.3962]. We show that each
one of these dd-modular forms arise as the Weyl-Kac-Borcherds denominator
formula of a rank-three Borcherds-Kac-Moody Lie superalgebra. The walls of the
Weyl chamber are in one-to-one correspondence with the walls of marginal
stability in the corresponding CHL model for twisted dyons as well as untwisted
ones. This leads to a periodic table of BKM Lie superalgebras with properties
that are consistent with physical expectations.Comment: LaTeX, 32 pages; (v2) matches published versio
Phase structure of black branes in grand canonical ensemble

This is a companion paper of our previous work [1] where we studied the
thermodynamics and phase structure of asymptotically flat black $p$-branes in a
cavity in arbitrary dimensions $D$ in a canonical ensemble. In this work we
study the thermodynamics and phase structure of the same in a grand canonical
ensemble. Since the boundary data in two cases are different (for the grand
canonical ensemble boundary potential is fixed instead of the charge as in
canonical ensemble) the stability analysis and the phase structure in the two
cases are quite different. In particular, we find that there exists an analog
of one-variable analysis as in canonical ensemble, which gives the same
stability condition as the rather complicated known (but generalized from black
holes to the present case) two-variable analysis. When certain condition for
the fixed potential is satisfied, the phase structure of charged black
$p$-branes is in some sense similar to that of the zero charge black $p$-branes
in canonical ensemble up to a certain temperature. The new feature in the
present case is that above this temperature, unlike the zero-charge case, the
stable brane phase no longer exists and `hot flat space' is the stable phase
here. In the grand canonical ensemble there is an analog of Hawking-Page
transition, even for the charged black $p$-brane, as opposed to the canonical
ensemble. Our study applies to non-dilatonic as well as dilatonic black
$p$-branes in $D$ space-time dimensions.Comment: 32 pages, 2 figures, various points refined, discussion expanded,
  references updated, typos corrected, published in JHEP 1105:091,201
Slow Burgers Vortices in Hot Conformal Fluids

The quintessential vortex solution in (3+1)-dimensional nonrelativistic,
incompressible fluid mechanics is the Burgers vortex. We show that, in a finite
domain, conformal fluids also admit hot vortex solutions with everywhere
nonrelativistic speeds. These are identical to Burgers' solution, except that
their radius is reduced by a factor of 2/sqrt(3). A rough calculation indicates
that at RHIC these vortices are indeed smaller than the fireball itself during
thermalization. Similarly to the Burgers vortex, these solutions manifest
vortex stretching which avoids short distance singularities and so suggests
that conformal fluid flows share the same nonsingularity as solutions of the
Navier-Stokes equations. Naively generalizing this calculation to an arbitrary
equation of state w, we observe that the Burgers vortex radius diverges as w
crosses -1. While it has been argued that such a crossover leads to an
instability in certain perfect fluids, the absence of Burgers vortices and
therefore vortex stretching suggests that, in addition to the well-studied big
rip singularities, viscous phantom fluids generically develop vorticity
singularities.Comment: 13 pages, no figure
LHC Searches for Non-Chiral Weakly Charged Multiplets

Because the TeV-scale to be probed at the Large Hadron Collider should shed light on the naturalness, hierarchy, and dark matter problems, most searches to date have focused on new physics signatures motivated by possible solutions to these puzzles. In this paper, we consider some candidates for new states that although not well-motivated from this standpoint are obvious possibilities that current search strategies would miss. In particular we consider vector representations of fermions in multiplets of \(SU\)(2)\(_{L}\) with a lightest neutral state. Standard search strategies would fail to ﬁnd such particles because of the expected small one-loop-level splitting between charged and neutral states.Physic
Manifest SO(N) invariance and S-matrices of three-dimensional N=2,4,8
  SYM

An on-shell formalism for the computation of S-matrices of SYM theories in
three spacetime dimensions is presented. The framework is a generalization of
the spinor-helicity formalism in four dimensions. The formalism is applied to
establish the manifest SO(N) covariance of the on-shell superalgebra relevant
to N =2,4 and 8 SYM theories in d=3. The results are then used to argue for the
SO(N) invariance of the S-matrices of these theories: a claim which is proved
explicitly for the four-particle scattering amplitudes. Recursion relations
relating tree amplitudes of three-dimensional SYM theories are shown to follow
from their four-dimensional counterparts. The results for the four-particle
amplitudes are verified by tree-level perturbative computations and a unitarity
based construction of the integrand corresponding to the leading perturbative
correction is also presented for the N=8 theory. For N=8 SYM, the manifest
SO(8) symmetry is used to develop a map between the color-ordered amplitudes of
the SYM and superconformal Chern-Simons theories, providing a direct connection
between on-shell observables of D2 and M2-brane theories.Comment: 28 page
Cascades with Adjoint Matter: Adjoint Transitions

A large class of duality cascades based on quivers arising from non-isolated
singularities enjoy adjoint transitions - a phenomenon which occurs when the
gauge coupling of a node possessing adjoint matter is driven to strong coupling
in a manner resulting in a reduction of rank in the non-Abelian part of the
gauge group and a subsequent flow to weaker coupling. We describe adjoint
transitions in a simple family of cascades based on a Z2-orbifold of the
conifold using field theory. We show that they are dual to Higgsing and produce
varying numbers of U(1) factors, moduli, and monopoles in a manner which we
calculate. This realizes a large family of cascades which proceed through
Seiberg duality and Higgsing. We briefly describe the supergravity limit of our
analysis, as well as a prescription for treating more general theories. A
special role is played by N=2 SQCD. Our results suggest that additional light
fields are typically generated when UV completing certain constructions of
spontaneous supersymmetry breaking into cascades, potentially leading to
instabilities.Comment: 29 pages, a few typos fixed, improved discussion, added figure; now
  there is 1 figur
Simple loop integrals and amplitudes in N=4 SYM

We use momentum twistors to evaluate planar loop integrals. Infrared
divergences are regulated by the recently proposed AdS-inspired mass regulator.
We show that two-loop amplitudes in N=4 super Yang-Mills can be expanded in
terms of basis integrals having twistor numerators. We argue that these
integrals are considerably simpler compared to the ones conventionally used.
Our case in point is the two-loop six-point MHV amplitude. We present
analytical results for the remainder function in a kinematical limit, and find
agreement with a recent Wilson loop computation. We also provide two-loop
evidence that the logarithm of MHV amplitudes can be written in terms of simple
twistor space integrals.Comment: 27 pages, 5 figure
Early-Time Energy Loss in a Strongly-Coupled SYM Plasma

We carry out an analytic study of the early-time motion of a quark in a
strongly-coupled maximally-supersymmetric Yang-Mills plasma, using the AdS/CFT
correspondence. Our approach extracts the first thermal effects as a small
perturbation of the known quark dynamics in vacuum, using a double expansion
that is valid for early times and for (moderately) ultrarelativistic quark
velocities. The quark is found to lose energy at a rate that differs
significantly from the previously derived stationary/late-time result: it
scales like T^4 instead of T^2, and is associated with a friction coefficient
that is not independent of the quark momentum. Under conditions representative
of the quark-gluon plasma as obtained at RHIC, the early energy loss rate is a
few times smaller than its late-time counterpart. Our analysis additionally
leads to thermally-corrected expressions for the intrinsic energy and momentum
of the quark, in which the previously discovered limiting velocity of the quark
is found to appear naturally.Comment: 39 pages, no figures. v2: Minor corrections and clarifications.
  References added. Version to be published in JHE
Fivebranes and resolved deformed G_2 manifolds

We study supergravity solutions corresponding to fivebranes wrapped on a
three-sphere inside a G_2 holonomy manifold. By changing a parameter the
solutions interpolate between a G_2 manifold X_i \cong S^3 x R^4 with flux on a
three-sphere and a distinct G_2 manifold X_j \cong S^3 x R^4 with branes on
another three-sphere. Therefore, these realise a G_2 geometric transition
purely in the supergravity context. We can add D2 brane charge by applying a
simple transformation to the initial solution and we obtain one-parameter
deformations of warped G_2 holonomy backgrounds. These solutions suggest a
connection between the N=1 Chern-Simons theory on the fivebranes and the field
theory dual to D2 branes and fractional NS5 branes, transverse to the G_2
manifold S^3 x R^4.Comment: 47 pages, 5 figures; v2: typos fixed, reference adde