Outputs (390)

Boundary metrics on soliton moduli spaces (2022)
Journal Article

The geodesic approximation is a powerful method for studying the dynamics of BPS solitons. However, there are systems, such as BPS monopoles in three-dimensional hyperbolic space, where this approach is not applicable because the moduli space metric... Read More about Boundary metrics on soliton moduli spaces.

Nonperturbative effects in the Standard Model with gauged 1-form symmetry (2021)
Journal Article

We study the Standard Model with gauged Z(1)N=2,3,6 subgroups of its Z(1)6 1-form global symmetry, making the gauge group SU(3)×SU(2)×U(1)ZN. We show that, on a finite T3, there are self-dual instantons of fractional topological charge. They mediate... Read More about Nonperturbative effects in the Standard Model with gauged 1-form symmetry.

Operational response simulation tool for epidemics within refugee and IDP settlements: A scenario-based case study of the Cox’s Bazar settlement (2021)
Journal Article

The spread of infectious diseases such as COVID-19 presents many challenges to healthcare systems and infrastructures across the world, exacerbating inequalities and leaving the world’s most vulnerable populations most affected. Given their density a... Read More about Operational response simulation tool for epidemics within refugee and IDP settlements: A scenario-based case study of the Cox’s Bazar settlement.

Small instantons and the strong CP problem in composite Higgs models (2021)
Journal Article

We show that QCD instantons can generate large effects at small length scales in the ultraviolet in standard composite Higgs models that utilize partial compositeness. This has important implications for possible solutions of the strong CP problem in... Read More about Small instantons and the strong CP problem in composite Higgs models.

An investigation of the $$\alpha _S$$ and heavy quark mass dependence in the MSHT20 global PDF analysis (2021)
Journal Article

We investigate the MSHT20 global PDF sets, demonstrating the effects of varying the strong coupling αS(M2Z) and the masses of the charm and bottom quarks. We determine the preferred value, and accompanying uncertainties, when we allow αS(M2Z) to be a... Read More about An investigation of the $$\alpha _S$$ and heavy quark mass dependence in the MSHT20 global PDF analysis.

Potential and limitations of machine-learning approaches to inclusive |Vub| determinations (2022)
Journal Article

The determination of |Vub| in inclusive semileptonic B → Xuℓν decays will be among the pivotal tasks of Belle II. In this paper we study the potential and limitations of machine-learning approaches that attempt to reduce theory uncertainties by exten... Read More about Potential and limitations of machine-learning approaches to inclusive |Vub| determinations.

Landscaping CP-violating BSM scenarios (2022)
Journal Article

We consider a wide range of UV scenarios with the aim of informing searches for CP violation at the TeV scale using effective field theory techniques. We demonstrate that broad theoretical assumptions about the nature of UV dynamics responsible for C... Read More about Landscaping CP-violating BSM scenarios.

Electroweak skyrmions in the HEFT (2021)
Journal Article

We study the existence of skyrmions in the presence of all the electroweak degrees of freedom, including a dynamical Higgs boson, with the electroweak symmetry being non-linearly realized in the scalar sector. For this, we use the formulation of the... Read More about Electroweak skyrmions in the HEFT.

If Loud Aliens Explain Human Earliness, Quiet Aliens Are Also Rare (2021)
Journal Article

If life on Earth had to achieve n “hard steps“ to reach humanityʼs level, then the chance of this event rose as time to the nth power. Integrating this over habitable star formation and planet lifetime distributions predicts >99% of advanced life app... Read More about If Loud Aliens Explain Human Earliness, Quiet Aliens Are Also Rare.

Elastic photon-initiated production at the LHC: the role of hadron-hadron interactions (2021)
Journal Article

We analyse in detail the role of additional hadron–hadron interactions in elastic photon– initiated (PI) production at the LHC, both in p p and heavy ion collisions. We first demonstrate that the source of difference between our predictions and other... Read More about Elastic photon-initiated production at the LHC: the role of hadron-hadron interactions.

On the consistency of (partially-)massless matter couplings in de Sitter space (2021)
Journal Article

We study the consistency of the cubic couplings of a (partially-)massless spinning field to two scalars in (d + 1)-dimensional de Sitter space. Gauge invariance of observables with external (partially)-massless spinning fields translates into Ward-Ta... Read More about On the consistency of (partially-)massless matter couplings in de Sitter space.

Flavoured resonant leptogenesis at sub-TeV scales (2021)
Journal Article

We consider sub-TeV scale flavoured resonant leptogenesis within the minimal type-I seesaw scenario with two right-handed singlet neutrinos N1,2forming a pseudo-Dirac pair, concentrating on the case of masses of the pseudo-Dirac pair having values M1... Read More about Flavoured resonant leptogenesis at sub-TeV scales.

A hyperbolic analogue of the Atiyah-Hitchin manifold (2022)
Journal Article

The Atiyah-Hitchin manifold is the moduli space of parity inversion symmetric charge two SU(2) monopoles in Euclidean space. Here a hyperbolic analogue is presented, by calculating the boundary metric on the moduli space of parity inversion symmetric... Read More about A hyperbolic analogue of the Atiyah-Hitchin manifold.

From dS to AdS and back (2021)
Journal Article

We describe in more detail the general relation uncovered in our previous work between boundary correlators in de Sitter (dS) and in Euclidean anti-de Sitter (EAdS) space, at any order in perturbation theory. Assuming the Bunch-Davies vacuum at early... Read More about From dS to AdS and back.

A comparative study of Higgs boson production from vector-boson fusion (2021)
Journal Article

The data taken in Run II at the Large Hadron Collider have started to probe Higgs boson production at high transverse momentum. Future data will provide a large sample of events with boosted Higgs boson topologies, allowing for a detailed understandi... Read More about A comparative study of Higgs boson production from vector-boson fusion.

Confronting SO(10) GUTs with proton decay and gravitational waves (2021)
Journal Article

Grand Unified Theories (GUT) predict proton decay as well as the formation of cosmic strings which can generate gravitational waves. We determine which non-supersymmetric SO(10) breaking chains provide gauge unification in addition to a gravitational... Read More about Confronting SO(10) GUTs with proton decay and gravitational waves.

Regge trajectories for the (2,0) theories (2022)
Journal Article

We investigate the structure of conformal Regge trajectories for the maximally supersymmetric (2, 0) theories in six dimensions. The different conformal multiplets in a single superconformal multiplet must all have similarly-shaped Regge trajectories... Read More about Regge trajectories for the (2,0) theories.

Probing dark matter clumps, strings and domain walls with gravitational wave detectors (2021)
Journal Article

Gravitational wave astronomy has recently emerged as a new way to study our Universe. In this work, we survey the potential of gravitational wave interferometers to detect macroscopic astrophysical objects comprising the dark matter. Starting from th... Read More about Probing dark matter clumps, strings and domain walls with gravitational wave detectors.

Cosmological Scattering Equations (2021)
Journal Article

We propose a worldsheet formula for tree-level correlation functions describing a scalar field with arbitrary mass and quartic self-interaction in de Sitter space, which is a simple model for inflationary cosmology. The correlation functions are loca... Read More about Cosmological Scattering Equations.

Gauged 2-form symmetries in 6D SCFTs coupled to gravity (2021)
Journal Article

We study six dimensional supergravity theories with superconformal sectors (SCFTs). Instances of such theories can be engineered using type IIB strings, or more generally F-Theory, which translates field theoretic constraints to geometry. Specificall... Read More about Gauged 2-form symmetries in 6D SCFTs coupled to gravity.