Outputs (908)

New N=1 dualities from orientifold transitions. Part I. Field Theory (2013)
Journal Article

Physics of F-theory compactifications without section (2014)
Journal Article

We study the physics of F-theory compactifications on genus-one fibrations without section by using an M-theory dual description. The five-dimensional action obtained by considering M-theory on a Calabi-Yau threefold is compared with a six-dimensiona... Read More about Physics of F-theory compactifications without section.

Strongly coupled phases of N=1 S-duality (2015)
Journal Article

Exceptional N=3 theories (2017)
Journal Article

We present a new construction of four dimensional N = 3 theories, given by M5 branes wrapping a T 2 in an M-theory U-fold background. The resulting setup generalizes the one used in the usual class S construction of four dimensional theories by using... Read More about Exceptional N=3 theories.

Global Orientifolded Quivers with Inflation (2017)
Journal Article

We describe global embeddings of fractional D3 branes at orientifolded singularities in type IIB flux compactifications. We present an explicit Calabi-Yau example where the chiral visible sector lives on a local orientifolded quiver while non-perturb... Read More about Global Orientifolded Quivers with Inflation.

Safe jet vetoes (2018)
Journal Article

Central jet vetoes are powerful tools for reducing QCD background in measurements and searches for electroweak and colorless, new physics processes in hadron collisions. In this letter, we report the key findings of a new philosophy to designing sear... Read More about Safe jet vetoes.

Particle physics with gravitational wave detector technology (2018)
Journal Article

Gravitational wave detector technology provides high-precision measurement apparatuses that, if combined with a modulated particle source, have the potential to measure and constrain particle interactions in a novel way, by measuring the pressure cau... Read More about Particle physics with gravitational wave detector technology.

Adversarially-trained autoencoders for robust unsupervised new physics searches (2019)
Journal Article

Machine learning techniques in particle physics are most powerful when they are trained directly on data, to avoid sensitivity to theoretical uncertainties or an underlying bias on the expected signal. To be able to train on data in searches for new... Read More about Adversarially-trained autoencoders for robust unsupervised new physics searches.

HEJ 2: High energy resummation for hadron colliders (2019)
Journal Article

We present HEJ 2, a new implementation of the High Energy Jets formalism for high-energy resummation in hadron-collider processes as a flexible Monte Carlo event generator. In combination with a conventional fixed-order event generator, HEJ 2 can be... Read More about HEJ 2: High energy resummation for hadron colliders.

Colliding Pomerons (2019)
Journal Article

We recall the main properties of inclusive particle distributions expected for Pomeron-proton and Pomeron–Pomeron interactions. Due to the small size of the Pomeron we expect larger transverse momenta of secondaries and a smaller probability of multi... Read More about Colliding Pomerons.

A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons (2019)
Journal Article

We present the first numerical results for the two-loop helicity amplitudes for the scattering of four partons and a W-boson in QCD. We use a finite field sampling method to reduce directly from Feynman diagrams to the coefficients of a set of master... Read More about A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons.

Event Generation with Sherpa 2.2 (2019)
Journal Article

Sherpa is a general-purpose Monte Carlo event generator for the simulation of particle collisions in high-energy collider experiments. We summarize essential features and improvements of the Sherpa 2.2 release series, which is heavily used for event... Read More about Event Generation with Sherpa 2.2.

NLO and off-shell effects in top quark mass determinations (2018)
Journal Article

We study the impact of different theoretical descriptions of top quark pair production on top quark mass measurements in the di-lepton channel. To this aim, the full NLO corrections to pp→W+W−bb¯¯→(e+νe)(μ−ν¯¯¯μ)bb¯¯ production are compared to calcul... Read More about NLO and off-shell effects in top quark mass determinations.

Nonlinearities induced by parametric resonance in effectively 1D atomic Bose condensates (2018)
Journal Article

We present a numerical study of the dynamical effects following a sudden change of the transverse trapping frequency in an elongated Bose-Einstein condensate, which induces periodic oscillations of the radial density. At early times, we observe an ex... Read More about Nonlinearities induced by parametric resonance in effectively 1D atomic Bose condensates.

Leptogenesis via Varying Weinberg Operator: the Closed-Time-Path Approach (2020)
Journal Article

In this work we provide a detailed study of the CP violating phase transition (CPPT) which is a new mechanism proposed to produce a baryon asymmetry. This mechanism exploits the Weinberg operator whose coefficient is dynamically realised from the vac... Read More about Leptogenesis via Varying Weinberg Operator: the Closed-Time-Path Approach.

pySecDec: a toolbox for the numerical evaluation of multi-scale integrals (2017)
Journal Article

We present pySecDec, a new version of the program SecDec, which performs the factorization of dimensionally regulated poles in parametric integrals, and the subsequent numerical evaluation of the finite coefficients. The algebraic part of the program... Read More about pySecDec: a toolbox for the numerical evaluation of multi-scale integrals.

Bottom-quark effects in Higgs production at intermediate transverse momentum (2018)
Journal Article

We provide a precise description of the Higgs boson transverse momentum distribution including top and bottom quark contributions, that is valid for transverse momenta in the range mb ≲ p⊥ ≲ mt, where mb and mt are the bottom and top quark masses. Th... Read More about Bottom-quark effects in Higgs production at intermediate transverse momentum.

Quantized Coulomb Branches, Monopole Bubbling and Wall-Crossing Phenomena in 3d N=4 Theories (2020)
Journal Article

To study the quantized Coulomb branch of 3d N = 4 unitary SQCD theories, we propose a new method to compute correlators of monopole and Casimir operators that are inserted in the R×R2ε Omega background. This method combines results from supersymmetri... Read More about Quantized Coulomb Branches, Monopole Bubbling and Wall-Crossing Phenomena in 3d N=4 Theories.

Merging high energy with soft and collinear logarithms using HEJ and PYTHIA (2018)
Journal Article

We present a method to combine the all-order treatment of the High Energy Jets exclusive partonic Monte Carlo (HEJ) with the parton shower of Pythia8, while retaining the logarithmic accuracy of both. This procedure enables the generation of fully re... Read More about Merging high energy with soft and collinear logarithms using HEJ and PYTHIA.

Not doomed to fail (2018)
Journal Article

In their recent manuscript “An uplifting discussion of T-duality ” [26], J. Harvey and G. Moore have reevaluated a mod two condition appearing in asymmetric orbifold constructions as an obstruction to the description of certain symmetries of toroidal... Read More about Not doomed to fail.