Outputs (1071)

M-theory beyond the supergravity approximation (2018)
Journal Article

We analyze the four-point function of stress-tensor multiplets for the 6d quantum field theory with OSp(8∗|4) symmetry which is conjectured to be dual to M-theory on AdS7 × S4, and deduce the leading correction to the tree-level supergravity predicti... Read More about M-theory beyond the supergravity approximation.

Lepton Number Violation: Seesaw Models and Their Collider Tests (2018)
Journal Article

The Majorana nature of neutrinos is strongly motivated from the theoretical and phenomenological point of view. A plethora of neutrino mass models, known collectively as Seesaw models, exist that could generate both a viable neutrino mass spectrum an... Read More about Lepton Number Violation: Seesaw Models and Their Collider Tests.

Resonant kink-antikink scattering through quasinormal modes (2018)
Journal Article

We investigate the role that quasinormal modes can play in kink–antikink collisions, via an example based on a deformation of the ϕ4 model. We find that narrow quasinormal modes can store energy during collision processes and later return it to the t... Read More about Resonant kink-antikink scattering through quasinormal modes.

Spontaneous breaking of SO(3) to finite family symmetries with supersymmetry — an A4 model (2018)
Journal Article

We discuss the breaking of SO(3) down to finite family symmetries such as A4, S4 and A5 using supersymmetric potentials for the first time. We analyse in detail the case of supersymmetric A4 and its finite subgroups Z3 and Z2. We then propose a super... Read More about Spontaneous breaking of SO(3) to finite family symmetries with supersymmetry — an A4 model.

Novel signature for long-lived particles at the LHC (2018)
Journal Article

In contrast to the decay products ensuing from a fast moving particle which are collimated along the original direction of the parent, those from a slow moving particle are distributed over a wide region. In the context of searches for heavy long-liv... Read More about Novel signature for long-lived particles at the LHC.

QCD3 with two-index quarks, mirror symmetry, and fivebrane anti-BIons near orientifolds (2018)
Journal Article

We consider a nonsupersymmetric Hanany-Witten type IIB brane configuration that realizes a threedimensional USpð2NÞ gauge theory with quarks in the two-index antisymmetric representation and SOð4Þ flavor symmetry. Using type IIB S-duality we find the... Read More about QCD3 with two-index quarks, mirror symmetry, and fivebrane anti-BIons near orientifolds.

Double-trace spectrum of N=4 supersymmetric Yang-Mills theory at strong coupling (2018)
Journal Article

The spectrum of IIB supergravity on AdS5 × S5 contains a number of bound states described by long double-trace multiplets in N ¼ 4 super Yang-Mills theory at large ‘t Hooft coupling. At large N these states are degenerate and to obtain their anomalou... Read More about Double-trace spectrum of N=4 supersymmetric Yang-Mills theory at strong coupling.

Excited cosmic strings with superconducting currents (2017)
Journal Article

We present a detailed analysis of excited cosmic string solutions that possess superconducting currents. These currents can be excited inside the string core, and—if the condensate is large enough—can lead to the excitations of the Higgs field. Next... Read More about Excited cosmic strings with superconducting currents.

Electroweak Higgs production with HiggsPO at NLO QCD (2017)
Journal Article

We present the HiggsPO UFO model for Monte Carlo event generation of electroweak VH and VBF Higgs production processes at NLO in QCD in the formalism of Higgs pseudo-observables (PO). We illustrate the use of this tool by studying the QCD corrections... Read More about Electroweak Higgs production with HiggsPO at NLO QCD.

Skyrmions and Clustering in Light Nuclei (2018)
Journal Article

One of the outstanding problems in modern nuclear physics is to determine the properties of nuclei from the fundamental theory of the strong force, quantum chromodynamics (QCD). Skyrmions offer a novel approach to this problem by considering nuclei a... Read More about Skyrmions and Clustering in Light Nuclei.

Rings on strings in excitable media (2018)
Journal Article

We study the dynamics and interaction of coaxial vortex rings in the FitzHugh–Nagumo excitable medium. We find that threading vortex rings with a vortex string results in significant qualitative differences in their evolution and interaction. In part... Read More about Rings on strings in excitable media.

NNLO QCD corrections to jet production in charged current deep inelastic scattering (2018)
Journal Article

The production of jets in charged current deep inelastic scattering (CC DIS) constitutes a class of observables that can be used to simultaneously test perturbative predictions for the strong and the electroweak sectors of the Standard Model. We comp... Read More about NNLO QCD corrections to jet production in charged current deep inelastic scattering.

Holography with a Landau pole (2017)
Journal Article

Holography for UV-incomplete gauge theories is important but poorly understood. A paradigmatic example is d = 4, N=4N=4 super Yang-Mills coupled to Nf quark flavors, which possesses a Landau pole at a UV scale ΛLP. The dual gravity solution exhibits... Read More about Holography with a Landau pole.

Dimension-six matrix elements for meson mixing and lifetimes from sum rules (2017)
Journal Article

The hadronic matrix elements of dimension-six ∆F = 0, 2 operators are crucial inputs for the theory predictions of mixing observables and lifetime ratios in the B and D system. We determine them using HQET sum rules for three-point correlators. The r... Read More about Dimension-six matrix elements for meson mixing and lifetimes from sum rules.

Gauge leptoquark as the origin of B-physics anomalies (2017)
Journal Article

The vector leptoquark representation, Uμ ¼ ð3; 1; 2=3Þ, was recently identified as an exceptional single mediator model to address experimental hints on lepton flavor universality violation in semileptonic B-meson decays, both in neutral (b → sμμ) an... Read More about Gauge leptoquark as the origin of B-physics anomalies.

Charming dark matter (2017)
Journal Article

We have considered a model of Dark Minimal Flavour Violation (DMFV), in which a triplet of dark matter particles couple to right-handed up-type quarks via a heavy colour-charged scalar mediator. By studying a large spectrum of possible constraints, a... Read More about Charming dark matter.

Radiative symmetry breaking from interacting UV fixed points (2017)
Journal Article

It is shown that the addition of positive mass-squared terms to asymptotically safe gauge-Yukawa theories with perturbative UV fixed points leads to calculable radiative symmetry breaking in the IR. This phenomenon, and the multiplicative running of... Read More about Radiative symmetry breaking from interacting UV fixed points.

Next-to-leading order QCD corrections to five jet production at the LHC (2014)
Journal Article

Local integrands for two-loop all-plus Yang-Mills amplitudes (2016)
Journal Article

We express the planar five- and six-gluon two-loop Yang-Mills amplitudes with all positive helicities in compact analytic form using D-dimensional local integrands that are free of spurious singularities. The integrand is fixed from on-shell tree amp... Read More about Local integrands for two-loop all-plus Yang-Mills amplitudes.

Higgs characterisation in the presence of theoretical uncertainties and invisible decays (2017)
Journal Article

While the Higgs characterisation programme is well under way, direct signs for new physics beyond the Standard Model remain elusive. Performing a fit of fully differential Higgs production cross sections at the LHC to a subset of Higgs-relevant effec... Read More about Higgs characterisation in the presence of theoretical uncertainties and invisible decays.