# Journal of High Energy Physics

## List of Papers (Total 9,970)

#### Singular ways to search for the Higgs boson

The discovery or exclusion of the fundamental standard scalar is a hot topic, given the data of LEP, the Tevatron and the LHC, as well as the advanced status of the pertinent theoretical calculations. With the current statistics at the hadron colliders, the workhorse decay channel, at all relevant H masses, is H → W W, followed by W → ℓν, ℓ = e or μ. Using phase-space singularity ...

#### Degeneration of groups of type E 7 and minimal coupling in supergravity

We study properties of D = 4 $\mathcal{N} \geqslant {2}$ extended supergravities (and related compactifications of superstring theory) and their consistent truncation to the phenomenologically interesting models of $\mathcal{N} = {1}$ supergravity. This involves a detailed classification of the “degenerations” of the duality groups of type E 7, when the corresponding ...

#### Determining the helicity structure of third generation resonances

We examine methods that have been proposed for determining the helicity structure of decays of new resonances to third generation quarks and/or leptons. We present analytical and semi-analytical predictions and assess the applicability of the relevant variables in realistic reconstruction scenarios using Monte Carlo-generated events, including the effects of QCD radiation and ...

#### One-loop BPS amplitudes as BPS-state sums

Recently, we introduced a new procedure for computing a class of one-loop BPS-saturated amplitudes in String Theory, which expresses them as a sum of one-loop contributions of all perturbative BPS states in a manifestly T-duality invariant fashion. In this paper, we extend this procedure to all BPS-saturated amplitudes of the form ∫ F Γ d+k,d Φ, with Φ being a weak (almost) ...

#### Metastable vacua and the backreacted Stenzel geometry

We construct an M-theory background dual to the metastable state recently discussed by Klebanov and Pufu, which corresponds to placing a stack of anti-M2 branes at the tip of a warped Stenzel space. With this purpose we analytically solve for the linearized non-supersymmetric deformations around the warped Stenzel space, preserving the SO(5) symmetries of the supersymmetric ...

#### Inclusive W and Z production in the forward region at $\sqrt {s} = 7\,{\text{TeV}}$

Measurements of inclusive W and Z boson production cross-sections in pp collisions at $\sqrt {s} = 7\,{\text{TeV}}$ using final states containing muons are presented. The data sample corresponds to an integrated luminosity of 37 pb−1 collected with the LHCb detector. The W and Z bosons are reconstructed from muons with a transverse momentum above 20 GeV/c and pseudorapidity ...

#### Algebras for amplitudes

Tree-level amplitudes of gauge theories are expressed in a basis of auxiliary amplitudes with only cubic vertices. The vertices in this formalism are explicitly factorized in color and kinematics, clarifying the color-kinematics duality in gauge theory amplitudes. The basis is constructed making use of the KK and BCJ relations, thereby showing precisely how these relations underlie ...

#### Topological susceptibility on the lattice and the three-flavour quark condensate

We reanalyse the topological susceptibility assuming the possibility of a significant paramagnetic suppression of the three-flavour quark condensate and a correlated enhancement of vacuum fluctuations of $s\overline s$ pairs. Using the framework of resummed χPT, we point out that simulations performed near the physical point, with a significant mass hierarchy between u, d and s ...

#### Eisenstein series for infinite-dimensional U-duality groups

We consider Eisenstein series appearing as coefficients of curvature corrections in the low-energy expansion of type II string theory four-graviton scattering amplitudes. We define these Eisenstein series over all groups in the E n series of string duality groups, and in particular for the infinite-dimensional Kac-Moody groups E 9, E 10 and E 11. We show that, remarkably, the ...

#### NLL soft and Coulomb resummation for squark and gluino production at the LHC

We present predictions of the total cross sections for pair production of squarks and gluinos at the LHC, including the stop-antistop production process. Our calculation supplements full fixed-order NLO predictions with resummation of threshold logarithms and Coulomb singularities at next-to-leading logarithmic (NLL) accuracy, including bound-state effects. The numerical effect of ...

#### Bekenstein entropy bound for weakly-coupled field theories on a 3-sphere

We calculate the high temperature partition functions for SU(N c ) or U(N c ) gauge theories in the deconfined phase on S 1 × S 3, with scalars, vectors, and/or fermions in an arbitrary representation, at zero ’t Hooft coupling and large N c, using analytical methods. We compare these with numerical results which are also valid in the low temperature limit and show that the ...

#### Parton shower evolution with subleading color

Parton shower Monte Carlo event generators in which the shower evolves from hard splittings to soft splittings generally use the leading color approximation, which is the leading term in an expansion in powers of ${{1} \left/ {{N_c^2}} \right.}$, where N c = 3 is the number of colors. We introduce a more general approximation, the LC + approximation, that includes some of the ...

#### Search for charged Higgs bosons decaying via H ± → τν in $t\overline t$ events using pp collision data at $\sqrt {s} = 7\;TeV$ with the ATLAS detector

The results of a search for charged Higgs bosons are presented. The analysis is based on 4.6fb−1 of proton-proton collision data at $\sqrt {s} = 7\;TeV$ collected by the ATLAS experiment at the Large Hadron Collider, using top quark pair events with a τ lepton in the final state. The data are consistent with the expected background from Standard Model processes. Assuming that ...

#### Aspects of holography for theories with hyperscaling violation

We analyze various aspects of the recently proposed holographic theories with general dynamical critical exponent z and hyperscaling violation exponent θ. We first find the basic constraints on z, θ from the gravity side, and compute the stress-energy tensor expectation values and scalar two-point functions. Massive correlators exhibit a nontrivial exponential behavior at long ...

#### Measurement of the inclusive production cross sections for forward jets and for dijet events with one forward and one central jet in pp collisions at $\sqrt {s} = 7$ TeV

The inclusive production cross sections for forward jets, as well for jets in dijet events with at least one jet emitted at central and the other at forward pseudorapidities, are measured in the range of transverse momenta p T = 35-150 GeV/c in proton-proton collisions at $\sqrt {s} = 7$ TeV by the CMS experiment at the LHC. Forward jets are measured within pseudorapidities 3.2 ...

#### Spatially homogeneous Lifshitz black holes in five dimensional higher derivative gravity

We consider spatially homogeneous Lifshitz black hole solutions in five dimensional higher derivative gravity theories, which can be possible near horizon geometries of some systems that are interesting in the framework of gauge/gravity duality. We show the solutions belonging to the nine Bianchi classes in the pure R 2 gravity. We find that these black holes have zero entropy at ...

#### Stabilization of the electroweak vacuum by a scalar threshold effect

We show how a heavy scalar singlet with a large vacuum expectation value can evade the potential instability of the Standard Model electroweak vacuum. The quartic interaction between the heavy scalar singlet and the Higgs doublet leads to a positive tree-level threshold correction for the Higgs quartic coupling, which is very effective in stabilizing the potential. We provide ...

#### The messenger sector of SUSY flavour models and radiative breaking of flavour universality

The flavour messenger sectors and their impact on the soft SUSY breaking terms are investigated in SUSY flavour models. In the case when the flavour scale M is below the SUSY breaking mediation scale M S , the universality of soft terms, even if assumed at M S , is radiatively broken. We estimate this effect in a broad class of models. In the CKM basis that effect gives flavour ...

#### Elliptic hypergeometric integrals and ’t Hooft anomaly matching conditions

Elliptic hypergeometric integrals describe superconformal indices of 4d supersymmetric field theories. We show that all ’t Hooft anomaly matching conditions for Seiberg dual theories can be derived from SL(3, $\mathbb{Z}$)-modular transformation properties of the kernels of dual indices.

#### Higgs and non-universal gaugino masses: no SUSY signal expected yet?

So far, no supersymmetric particles have been detected at the Large Hadron Collider (LHC). However, the recent Higgs results have interesting implications for the SUSY parameter space. In this paper, we study the consequences of an LHC Higgs signal for a model with non-universal gaugino masses in the context of SU(5) unification. The gaugino mass ratios associated with the higher ...

#### Measurement of inclusive two-particle angular correlations in pp collisions with the ATLAS detector at the LHC

We present a measurement of two-particle angular correlations in proton- proton collisions at $\sqrt {s} = 900$ GeV and 7 TeV. The collision events were collected during 2009 and 2010 with the ATLAS detector at the Large Hadron Collider using a single-arm minimum bias trigger. Correlations are measured for charged particles produced in the kinematic range of transverse momentum ...

#### Constraints on the pMSSM from searches for squarks and gluinos by ATLAS

We study the impact of the jets and missing transverse momentum SUSY anal- yses of the ATLAS experiment on the phenomenological MSSM (pMSSM). We investigate sets of SUSY models with a flat and logarithmic prior in the SUSY mass scale and a mass range up to 1 and 3 TeV, respectively. These models were found previously in the study ’Supersymmetry without Prejudice’. Removing models ...

#### Exact results for ’t Hooft loops in Gauge theories on S 4

The path integral of a general $\mathcal{N} = 2$ supersymmetric gauge theory on S 4 is exactly evaluated in the presence of a supersymmetric ’t Hooft loop operator. The result we find — obtained using localization techniques — captures all perturbative quantum corrections as well as non-perturbative effects due to instantons and monopoles, which are supported at the north pole, ...