Journal of High Energy Physics

http://link.springer.com/journal/13130

List of Papers (Total 10,859)

The phenomenology of electric dipole moments in models of scalar leptoquarks

Abstract We study the phenomenology of electric dipole moments (EDMs) induced in various scalar leptoquark models. We consider generic leptoquark couplings to quarks and leptons and match to Standard Model effective field theory. After evolving the resulting operators to low energies, we connect to EDM experiments by using up-to-date hadronic, nuclear, and atomic matrix elements...

Phenomenology with a recoil-free jet axis: TMD fragmentation and the jet shape

Abstract We study the phenomenology of recoil-free jet axes using analytic calculations and Monte Carlo simulations. Our focus is on the average energy as function of the angle with the jet axis (the jet shape), and the energy and transverse momenta of hadrons in a jet (TMD fragmentation). We find that the dependence on the angle (or transverse momentum) is governed by a power...

Holographic duals of five-dimensional SCFTs on a Riemann surface

Abstract We study the twisted compactifications of five-dimensional Seiberg SCFTs, with \( {\mathrm{SU}}_{\mathrm{\mathcal{M}}}(2)\times {E}_{N_f}+1 \) flavor symmetry, on a generic Riemann surface that preserves four supercharges. The five-dimensional SCFTs are obtained from the decoupling limit of N D4-branes probing a geometry of Nf < 8 D8-branes and an O8-plane. In addition...

On the spectrum and string tension of U(1) lattice gauge theory in 2 + 1 dimensions

Abstract We calculate the low-lying spectra of glueballs and confining flux tubes in the U(1) lattice gauge theory in 2 + 1 dimensions. We see that up to modest lattice spacing corrections, the glueball states are consistent with being multiparticle states composed of non-interacting massive JPC = 0− − particles. We observe that the ag2 → 0 limit is, as expected, unconventional...

An entropy current in superspace

Abstract We provide a mechanism by which an entropy current can be constructed in a supersymmetric formulation of the low-energy effective action for the Schwinger-Keldysh generating functional. This mechanism allows us to define an entropy current quantum mechanically by coupling it to an external source. Such an entropy current is given by the bottom component of an entropy...

Towards a C-theorem in defect CFT

Abstract We explore a C-theorem in defect conformal field theories (DCFTs) that unify all the known conjectures and theorems until now. We examine as a candidate C-function the additional contributions from conformal defects to the sphere free energy and the entanglement entropy across a sphere in a number of examples including holographic models. We find the two quantities are...

Supersymmetric AdS6 black holes from F(4) gauged supergravity

Abstract In F (4) gauged supergravity in six dimensions, we study supersymmetric AdS6 black holes with various horizon geometries. We find a new \( Ad{S}_2 \times {\Sigma}_{\mathfrak{g}1}\times {\Sigma}_{\mathfrak{g}2} \) horizon solution with \( {\mathfrak{g}}_1>1 \) and \( {\mathfrak{g}}_2>1 \), and present the black hole solution numerically. The full black hole is an...

Fluid description of gravity on a timelike cut-off surface: beyond Navier-Stokes equation

Abstract Over the past few decades, a host of theoretical evidence has surfaced that suggest a connection between theories of gravity and the Navier-Stokes (NS) equation of fluid dynamics. It emerges out that a theory of gravity can be treated as some kind of fluid on a particular surface. Motivated by the work carried out by Bredberg et al. [6], our paper focuses on including...

Multiloop soft theorem for gravitons and dilatons in the bosonic string

We construct, in the closed bosonic string, the multiloop amplitude involving N tachyons and one massless particle with 26 − D compactified directions, and we show that at least for D > 4, the soft behaviors of the graviton and dilaton satisfy the same soft theorems as at the tree level, up to one additional term at the subsubleading order, which can only contribute to the...

Cluster algebras and the subalgebra constructibility of the seven-particle remainder function

Abstract We review various aspects of cluster algebras and the ways in which they appear in the study of loop-level amplitudes in planar \( \mathcal{N}=4 \) supersymmetric Yang-Mills theory. In particular, we highlight the different forms of cluster-algebraic structure that appear in this theory’s two-loop MHV amplitudes — considered as functions, symbols, and at the level of...

Testing the (0,2) mirror map

Abstract We test a proposed mirror map at the level of correlators for linear models describing the (0,2) moduli space of superconformal field theories with a (2,2) locus associated to Calabi-Yau hypersurfaces in toric varieties. We verify in non-trivial examples that the correlators are exchanged by the mirror map and we derive a correspondence between the observables of the A/2...

A quantum check of non-supersymmetric AdS/dCFT

Abstract Via a challenging field-theory computation, we confirm a supergravity prediction for the non-supersymmetric D3-D7 probe-brane system with probe geometry AdS4 ×S2 ×S2, stabilized by fluxes. Supergravity predicts, in a certain double-scaling limit, the value of the one-point functions of chiral primaries of the dual defect version of \( \mathcal{N}=4 \) SYM theory, where...

Scalar blocks as gravitational Wilson networks

Abstract In this paper we continue to develop further our prescription [arXiv:1602.02962] to holographically compute the conformal partial waves of CFT correlation functions using the gravitational open Wilson network operators in the bulk. In particular, we demonstrate how to implement it to compute four-point scalar partial waves in general dimension. In the process we...

Dark matter from strong dynamics: the minimal theory of dark baryons

Abstract As a simple model for dark matter, we propose a QCD-like theory based on SU(2) gauge theory with one flavor of dark quark. The model is confining at low energy and we use lattice simulations to investigate the properties of the lowest-lying hadrons. Compared to QCD, the theory has several peculiar differences: there are no Goldstone bosons or chiral symmetry restoration...

Semi-local quantum criticality and the instability of extremal planar horizons

Abstract We show that the Aretakis instability of compact extremal horizons persists in the planar case of interest to holography and discuss its connection with the emergence of “semi-local quantum criticality” in the field theory dual. In particular, the spatially localized power-law decay of this critical phase corresponds to spatially localized power-law growth of stress...

Probing compressed dark sectors at 100 TeV in the dileptonic mono-Z channel

Abstract We examine the sensitivity at a future 100 TeV proton-proton collider to compressed dark sectors whose decay products are invisible due to below-threshold energies and/or small couplings to the Standard Model. Such a scenario could be relevant to models of WIMP dark matter, where the lightest New Physics state is an (isolated) electroweak multiplet whose lowest component...

Modular flow as a disentangler

Abstract In holographic duality, the entanglement entropy of a boundary region is proposed to be dual to the area of an extremal codimension-2 surface that is homologous to the boundary region, known as the Hubeny-Rangamani-Takayanagi (HRT) surface. In this paper, we study when the HRT surfaces of two boundary subregions R, A are in the same Cauchy slice. This condition is...

The Lund jet plane

Abstract Lund diagrams, a theoretical representation of the phase space within jets, have long been used in discussing parton showers and resummations. We point out that they can be created for individual jets through repeated Cambridge/Aachen declustering, providing a powerful visual representation of the radiation within any given jet. Concentrating here on the primary Lund...

J/ψ polarization in the CGC+NRQCD approach

Abstract We compute the J/ψ polarization observables λθ, λϕ, λθϕ in a Color Glass Condensate (CGC) + nonrelativistic QCQ (NRQCD) formalism that includes contributions from both color singlet and color octet intermediate states. Our results are compared to low pT data on J/ψ polarization from the LHCb and ALICE experiments on proton-proton collisions at center-of-mass energies of...

Two Higgs doublets and a complex singlet: disentangling the decay topologies and associated phenomenology

Abstract We present a systematic study of an extension of the Standard Model (SM) with two Higgs doublets and one complex singlet (2HDM+S). In order to gain analytical understanding of the parameter space, we re-parameterize the 27 parameters in the Lagrangian by quantities more closely related to physical observables: physical masses, mixing angles, trilinear and quadratic...

Numerical study of the \( \mathcal{N}=2 \) Landau-Ginzburg model with two superfields

Abstract In the low energy limit, the two-dimensional massless \( \mathcal{N}=2 \) Wess-Zumino (WZ) model with a quasi-homogeneous superpotential is believed to become a superconformal field theory. This conjecture of the Landau-Ginzburg (LG) description has been studied numerically in the case of the A2, A3, and E6 minimal models. In this paper, by using a supersymmetric...

Deep learning as a parton shower

Abstract We make the connection between certain deep learning architectures and the renormalisation group explicit in the context of QCD by using a deep learning network to construct a toy parton shower model. The model aims to describe proton-proton collisions at the Large Hadron Collider. A convolutional autoencoder learns a set of kernels that efficiently encode the behaviour...

Producing a new fermion in coherent elastic neutrino-nucleus scattering: from neutrino mass to dark matter

Abstract We consider the production of a new MeV-scale fermion in coherent elastic neutrino-nucleus scattering. The effect on the measurable nucleon recoil spectrum is calculated. Assuming that the new fermion couples to neutrinos and quarks via a singlet scalar, we set limits on its mass and coupling using COHERENT data and also determine the sensitivity of the CONUS experiment...

4D spin-2 fields from 5D Chern-Simons theory

Abstract We consider a 5-dimensional Chern-Simons gauge theory for the isometry group of Anti-de-Sitter spacetime, AdS4+1 ≃ SO(4, 2), and invoke different dimensional reduction schemes in order to relate it to 4-dimensional spin-2 theories. The AdS gauge algebra is isomorphic to a parametrized 4-dimensional conformal algebra, and the gauge fields corresponding to the generators...

Dualities and 5-brane webs for 5d rank 2 SCFTs

Abstract We consider Type IIB 5-brane configurations for 5d rank 2 superconformal theories which are classified recently by geometry in [1]. We propose all the 5-brane web diagrams for these rank 2 theories and show dualities between some of different gauge theories with explicit duality map of mass parameters and Coulomb branch moduli. In particular, we explicitly construct 5...