Journal of High Energy Physics

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

List of Papers (Total 9,126)

\( \mathcal{W} \) algebras are L∞ algebras

It is shown that the closure of the infinitesimal symmetry transformations underlying classical \( \mathcal{W} \) algebras give rise to L∞ algebras with in general field dependent gauge parameters. Therefore, the class of well understood \( \mathcal{W} \) algebras provides highly nontrivial examples of such strong homotopy Lie algebras. We develop the general formalism for this ...

Supersymmetric Casimir energy and \( \mathrm{S}\mathrm{L}\left(3,\mathrm{\mathbb{Z}}\right) \) transformations

We provide a recipe to extract the supersymmetric Casimir energy of theories defined on primary Hopf surfaces directly from the superconformal index. It involves an \( \mathrm{S}\mathrm{L}\left(3,\mathrm{\mathbb{Z}}\right) \) transformation acting on the complex structure moduli of the background geometry. In particular, the known relation between Casimir energy, index and ...

Search for dark matter produced with an energetic jet or a hadronically decaying W or Z boson at \( \sqrt{s}=13 \) TeV

A search for dark matter particles is performed using events with large missing transverse momentum, at least one energetic jet, and no leptons, in proton-proton collisions at \( \sqrt{s}=13 \) TeV collected with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 12.9 fb−1. The search includes events with jets from the hadronic decays of a W or ...

Unitarity and positivity constraints for CFT at large central charge

We consider the four-point correlator of the stress tensor multiplet in \( \mathcal{N}=4 \) SYM in the limit of large central charge c ∼ N 2. For finite values of g 2 N single-trace intermediate operators arise at order 1/c and this leads to specific poles in the Mellin representation of the correlator. The sign of the residue at these poles is fixed by unitarity. We consider ...

Supercurrent anomalies in 4d SCFTs

We use holographic renormalization of minimal \( \mathcal{N}=2 \) gauged supergravity in order to derive the general form of the quantum Ward identities for 3d \( \mathcal{N}=2 \) and 4d \( \mathcal{N}=1 \) superconformal theories on general curved backgrounds, including an arbitrary fermionic source for the supercurrent. The Ward identities for 4d \( \mathcal{N}=1 \) theories ...

Betti multiplets, flows across dimensions and c-extremization

We consider 4d \( \mathcal{N} \) = 1 SCFTs, topologically twisted on compact constant curvature Riemann surfaces, giving rise to 2d \( \mathcal{N} \) = (0, 2) SCFTs. The exact R-current of these 2d SCFT extremizes the central charge c 2d , similarly to the 4d picture, where the exact R-current maximizes the central charge a 4d . There are global currents that do not mix with the ...

Loops in AdS from conformal field theory

We propose and demonstrate a new use for conformal field theory (CFT) crossing equations in the context of AdS/CFT: the computation of loop amplitudes in AdS, dual to non-planar correlators in holographic CFTs. Loops in AdS are largely unexplored, mostly due to technical difficulties in direct calculations. We revisit this problem, and the dual 1/N expansion of CFTs, in two ...

Gauge symmetry enhancing-breaking from a Double Field Theory perspective

Gauge symmetry enhancing, at specific points of the compactification space, is a distinguished feature of string theory. In this work we discuss the breaking of such symmetries with tools provided by Double Field Theory (DFT). As a main guiding example we discuss the bosonic string compactified on a circle where, at the self-dual radio the generic U(1) × U(1) gauge symmetry becomes ...

Scalar gravitational waves in the effective theory of gravity

As a low energy effective field theory, classical General Relativity receives an infrared relevant modification from the conformal trace anomaly of the energy-momentum tensor of massless, or nearly massless, quantum fields. The local form of the effective action associated with the trace anomaly is expressed in terms of a dynamical scalar field that couples to the conformal factor ...

Causality implies inflationary back-reaction

There is a widespread belief among inflationary cosmologists that a local observer cannot sense super-horizon gravitons. The argument goes that a local observer would subsume super-horizon gravitons into a redefinition of his coordinate system. We show that adopting this view for pure gravity on de Sitter background leads to time variation in the Hubble parameter measured by a ...

Studies of a general flat space/boson star transition model in a box through a language similar to holographic superconductors

We study a general flat space/boson star transition model in quasi-local ensemble through approaches familiar from holographic superconductor theories. We manage to find a parameter ψ 2, which is proved to be useful in disclosing properties of phase transitions. In this work, we explore effects of the scalar mass, scalar charge and Stückelberg mechanism on the critical phase ...

Exact self-duality in a modified Skyrme model

We propose a modification of the Skyrme model that supports a self-dual sector possessing exact non-trivial finite energy solutions. The action of such a theory possesses the usual quadratic and quartic terms in field derivatives, but the couplings of the components of the Maurer-Cartan form of the Skyrme model is made by a non-constant symmetric matrix, instead of the usual ...

Dilaton EFT framework for lattice data

We develop an effective-field-theory (EFT) framework to analyze the spectra emerging from lattice simulations of a large class of confining gauge theories. Simulations of these theories, for which the light-fermion count is not far below the critical value for transition to infrared conformal behavior, have indicated the presence of a remarkably light singlet scalar particle. We ...

Search for new physics with dijet angular distributions in proton-proton collisions at \( \sqrt{s}=13 \) TeV

A search is presented for extra spatial dimensions, quantum black holes, and quark contact interactions in measurements of dijet angular distributions in proton-proton collisions at \( \sqrt{s}=13 \) TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 2.6 fb−1. The distributions are found to be in agreement with predictions ...

Off-shell superconformal higher spin multiplets in four dimensions

We formulate off-shell \( \mathcal{N} \) = 1 superconformal higher spin multiplets in four spacetime dimensions and briefly discuss their coupling to conformal supergravity. As an example, we explicitly work out the coupling of the superconformal gravitino multiplet to conformal supergravity. The corresponding action is super-Weyl invariant for arbitrary supergravity backgrounds. ...

BPS graphs: from spectral networks to BPS quivers

We define “BPS graphs” on punctured Riemann surfaces associated with A N −1 theories of class \( \mathcal{S} \). BPS graphs provide a bridge between two powerful frameworks for studying the spectrum of BPS states: spectral networks and BPS quivers. They arise from degenerate spectral networks at maximal intersections of walls of marginal stability on the Coulomb branch. While the ...

Multi-kink collisions in the ϕ 6 model

We study simultaneous collisions of two, three, and four kinks and antikinks of the ϕ 6 model at the same spatial point. Unlike the ϕ 4 kinks, the ϕ 6 kinks are asymmetric and this enriches the variety of the collision scenarios. In our numerical simulations we observe both reflection and bound state formation depending on the number of kinks and on their spatial ordering in the ...

Bootstrapping mixed correlators in 4D \( \mathcal{N} \) = 1 SCFTs

The numerical conformal bootstrap is used to study mixed correlators in \( \mathcal{N} \) = 1 superconformal field theories (SCFTs) in d = 4 spacetime dimensions. Systems of fourpoint functions involving scalar chiral and real operators are analyzed, including the case where the scalar real operator is the zero component of a global conserved current multiplet. New results on ...

Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at \( \sqrt{s}=8 \) TeV

A search for the production of a single top quark in association with a Z boson is presented, both to identify the expected standard model process and to search for flavour-changing neutral current interactions. The data sample corresponds to an integrated luminosity of 19.7 fb−1 recorded by the CMS experiment at the LHC in proton-proton collisions at \( \sqrt{s}=8 \) TeV. Final ...

Search for \( \mathrm{t}\overline{\mathrm{t}} \) resonances in highly boosted lepton+jets and fully hadronic final states in proton-proton collisions at \( \sqrt{s}=13 \) TeV

A search for the production of heavy resonances decaying into top quark-antiquark pairs is presented. The analysis is performed in the lepton+jets and fully hadronic channels using data collected in proton-proton collisions at \( \sqrt{s}=13 \) TeV using the CMS detector at the LHC, corresponding to an integrated luminosity of 2.6 fb−1. The selection is optimized for massive ...

Exact Holography and Black Hole Entropy in \( \mathcal{N}=8 \) and \( \mathcal{N}=4 \) String Theory

We compute the exact entropy of one-eighth and one-quarter BPS black holes in \( \mathcal{N}=8 \) and \( \mathcal{N}=4 \) string theory respectively. This includes all the \( \mathcal{N}=4 \) CHL models in both K3 and T 4 compactifications. The main result is a measure for the finite dimensional integral that one obtains after localization of supergravity on AdS 2 × S 2. This ...

NNLO QCD corrections to jet production in deep inelastic scattering

Hadronic jets in deeply inelastic electron-proton collisions are produced by the scattering of a parton from the proton with the virtual gauge boson mediating the interaction. The HERA experiments have performed precision measurements of inclusive single jet production and di-jet production in the Breit frame, which provide important constraints on the strong coupling constant and ...

Observables in the Guarino-Jafferis-Varela/CS-SYM duality

We study various semiclassical observables in the duality proposed by Guarino, Jafferis and Varela, between a warped AdS 4× squashed S 6 gravitational solution and a 3 dimensional \( \mathcal{N}=2\ \mathrm{S}\mathrm{Y}\mathrm{M}-{\mathrm{CS}}_k \) conformal gauge theory, deformed from the maximal SU(N) \( \mathcal{N}=8\mathrm{S}\mathrm{Y}\mathrm{M} \). ...

Cluster functions and scattering amplitudes for six and seven points

Scattering amplitudes in planar super-Yang-Mills theory satisfy several basic physical and mathematical constraints, including physical constraints on their branch cut structure and various empirically discovered connections to the mathematics of cluster algebras. The power of the bootstrap program for amplitudes is inversely proportional to the size of the intersection between ...

Higgs-differential cross section at NNLO in dimensional regularisation

We present an analytic computation of the Higgs production cross section in the gluon fusion channel, which is differential in the components of the Higgs momentum and inclusive in the associated partonic radiation through NNLO in perturbative QCD. Our computation includes the necessary higher order terms in the dimensional regulator beyond the finite part that are required for ...