Outputs (519)

Black holes, oscillating instantons and the Hawking-Moss transition (2020)
Journal Article

Static oscillating bounces in Schwarzschild de Sitter spacetime are investigated. The oscillating bounce with many oscillations gives a super-thick bubble wall, for which the total vacuum energy increases while the mass of the black hole decreases du... Read More about Black holes, oscillating instantons and the Hawking-Moss transition.

Hawking-Moss transition with a black hole seed (2020)
Journal Article

We extend the concept of Hawking-Moss, or up-tunnelling, transitions in the early universe to include black hole seeds. The black hole greatly enhances the decay amplitude, however, order to have physically consistent results, we need to impose a new... Read More about Hawking-Moss transition with a black hole seed.

The Star-Formation Properties of the Observed and Simulated AGN Universe: BAT vs EAGLE (2020)
Journal Article

In this paper we present data from 72 low redshift, hard X-ray selected AGN taken from the Swift-BAT 58 month catalogue. We utilise spectral energy distribution fitting to the optical to IR photometry in order to estimate host galaxy properties. We c... Read More about The Star-Formation Properties of the Observed and Simulated AGN Universe: BAT vs EAGLE.

Chiral algebras for trinion theories (2015)
Journal Article

Bootstrapping N=3 superconformal theories (2017)
Journal Article

Top quark pair production at complete NLO accuracy with NNLO+NNLL′ corrections in QCD (2020)
Journal Article

We describe predictions for top quark pair differential distributions at hadron colliders, by combining the next-to-next-to-leading order quantum chromodynamics calculations and next-to-leading order electroweak corrections with double resummation at... Read More about Top quark pair production at complete NLO accuracy with NNLO+NNLL′ corrections in QCD.

Double copy structure and the flat space limit of conformal correlators in even dimensions (2020)
Journal Article

We analyze the flat space limit of 3-point correlators in momentum space for general conformal field theories in even spacetime dimensions, and show they exhibit a double copy structure similar to that found in odd dimensions. In even dimensions, the... Read More about Double copy structure and the flat space limit of conformal correlators in even dimensions.

Line Defects and Radiation in N=2 Conformal Theories (2018)
Journal Article

We study the conformal data of a generic superconformal line defect preserving half of the supercharges in a four-dimensional N = 2 conformal theory. We prove a theory independent relation between the one-point function of the stress tensor in the pr... Read More about Line Defects and Radiation in N=2 Conformal Theories.

The effective field theory of low scale see-saw at colliders (2020)
Journal Article

We study the Standard Model effective field theory (νSMEFT) extended with operators involving right-handed neutrinos, focussing on the regime where the right-handed neutrinos decay promptly on collider scales to a photon and a Standard Model neutrino... Read More about The effective field theory of low scale see-saw at colliders.

M-Theory and Orientifolds (2020)
Journal Article

We construct the M-Theory lifts of type IIA orientifolds based on K3-fibred Calabi-Yau threefolds with compatible involutions. Such orientifolds are shown to lift to M-Theory on twisted connected sum G2 manifolds. Beautifully, the two building blocks... Read More about M-Theory and Orientifolds.

Fully Convolutional Neural Network for Rapid Flood Segmentation in Synthetic Aperture Radar Imagery (2020)
Journal Article

Rapid response to natural hazards, such as floods, is essential to mitigate loss of life and the reduction of suffering. For emergency response teams, access to timely and accurate data is essential. Satellite imagery offers a rich source of informat... Read More about Fully Convolutional Neural Network for Rapid Flood Segmentation in Synthetic Aperture Radar Imagery.

Isolated photon and photon+jet production at NNLO QCD accuracy (2020)
Journal Article

We describe the calculation of the next-to-next-to-leading order (NNLO) QCD corrections to isolated photon and photon-plus-jet production, and discuss how the experimental hadron-level photon definition and isolation criteria can be approximated in t... Read More about Isolated photon and photon+jet production at NNLO QCD accuracy.

Type-B anomaly matching and the 6D (2,0) theory (2020)
Journal Article

We study type-B conformal anomalies associated with 12 -BPS Coulomb-branch operators in 4D N = 2 superconformal field theories. When the vacuum preserves the conformal symmetry these anomalies coincide with the two-point function coefficients in the... Read More about Type-B anomaly matching and the 6D (2,0) theory.

Logarithmic accuracy of angular-ordered parton showers (2020)
Journal Article

We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has bo... Read More about Logarithmic accuracy of angular-ordered parton showers.

Isolating the Odderon in central production in high energy pA and AA collisions (2020)
Journal Article

We study the rapidity dependence of the central exclusive production cross sections of C-even mesons in pA and AA collisions, where A is a heavy ion. We observe qualitatively different behaviour of the contributions arising from γ-Odderon and Pomeron... Read More about Isolating the Odderon in central production in high energy pA and AA collisions.

Hadronic footprint of GeV-mass dark matter (2020)
Journal Article

GeV-scale dark matter is an increasingly attractive target for direct detection, indirect detection, and collider searches. Its annihilation into hadronic final states produces a challenging zoo of light hadronic resonances. We update Herwig7 to stud... Read More about Hadronic footprint of GeV-mass dark matter.

SU(2) channels the cancellation of K3 BPS states (2020)
Journal Article

The conformal field theoretic elliptic genus, an invariant for N = (2, 2) superconformal field theories, counts the BPS states in any such theory with signs, according to their bosonic or fermionic nature. For K3 theories, this invariant is the sourc... Read More about SU(2) channels the cancellation of K3 BPS states.

On the stability of open-string orbifold models with broken supersymmetry (2020)
Journal Article

We consider an open-string realisation of spontaneous breaking of supersymmetry in four-dimensional Minkowski spacetime. It is based on type IIB orientifold theory compactified on , with Scherk–Schwarz supersymmetry breaking implemented along . We sh... Read More about On the stability of open-string orbifold models with broken supersymmetry.

Charming new B-physics (2020)
Journal Article

We give a comprehensive account of the flavour physics of Beyond-Standard-Model (BSM) effects in b → cc¯¯cs transitions, considering the full set of 20 four-quark operators. We discuss the leading-order structure of their RG mixing with each other as... Read More about Charming new B-physics.

Using neural networks for efficient evaluation of high multiplicity scattering amplitudes (2020)
Journal Article

Precision theoretical predictions for high multiplicity scattering rely on the evaluation of increasingly complicated scattering amplitudes which come with an extremely high CPU cost. For state-of-the-art processes this can cause technical bottleneck... Read More about Using neural networks for efficient evaluation of high multiplicity scattering amplitudes.