Outputs (759)

Higher-form symmetries, anomalous magnetohydrodynamics, and holography (2023)
Journal Article

In U ( 1 ) Abelian gauge theory coupled to fermions, the non-conservation of the axial current due to the chiral anomaly is given by a dynamical operator F μ ν ~ F μ ν constructed from the field-strength tensor. We attempt to describe this physics in... Read More about Higher-form symmetries, anomalous magnetohydrodynamics, and holography.

The death of the short-form physics essay in the coming AI revolution (2023)
Journal Article

The latest AI language modules can produce original, high quality full short-form (300-word) Physics essays within seconds. These technologies such as ChatGPT and davinci-003 are freely available to anyone with an internet connection. In this work, w... Read More about The death of the short-form physics essay in the coming AI revolution.

Searches for QCD instantons with forward proton tagging (2023)
Journal Article

We study the possibility to observe heavy (Minst>60 GeV) QCD instantons at the LHC in events with one or two tagged leading protons including fast simulation of detector and pile-up effects. We show that the expected instanton signal in a single-tagg... Read More about Searches for QCD instantons with forward proton tagging.

A general algorithm to build real-radiation antenna functions for higher-order calculations (2023)
Journal Article

The antenna subtraction method has been successfully applied to a wide range of processes relevant for the Large Hadron Collider at next-to-next-to-leading order in αs (NNLO). We propose an algorithm for building antenna functions for any number of r... Read More about A general algorithm to build real-radiation antenna functions for higher-order calculations.

A standard convention for particle-level Monte Carlo event-variation weights (2023)
Journal Article

Streams of event weights in particle-level Monte Carlo event generators are a convenient and immensely CPU-efficient approach to express systematic uncertainties in phenomenology calculations, providing systematic variations on the nominal prediction... Read More about A standard convention for particle-level Monte Carlo event-variation weights.

Multi-variable integration with a neural network (2023)
Journal Article

In this article we present a method for automatic integration of parametric integrals over the unit hypercube using a neural network. The method fits a neural network to the primitive of the integrand using a loss function designed to minimize the di... Read More about Multi-variable integration with a neural network.

Quantum fitting framework applied to effective field theories (2023)
Journal Article

The use of experimental data to constrain the values of the Wilson coefficients of an effective field theory involves minimizing a χ2 function that may contain local minima. Classical optimization algorithms can become trapped in these minima, preven... Read More about Quantum fitting framework applied to effective field theories.

Qade: solving differential equations on quantum annealers (2022)
Journal Article

We present a general method, called Qade, for solving differential equations using a quantum annealer. One of the main advantages of this method is its flexibility and reliability. On current devices, Qade can solve systems of coupled partial differe... Read More about Qade: solving differential equations on quantum annealers.

Precision phenomenology with fiducial cross sections in the triple-differential Drell-Yan process (2023)
Journal Article

The production of lepton pairs (Drell-Yan process) at the LHC is being measured to high precision, enabling the extraction of distributions that are triply differential in the di-lepton mass and rapidity as well as in the scattering angle described b... Read More about Precision phenomenology with fiducial cross sections in the triple-differential Drell-Yan process.

High energy resummed predictions for the production of a Higgs boson with at least one jet (2023)
Journal Article

We present all-order predictions for Higgs boson production plus at least one jet which are accurate to leading logarithm in s^/|p⊥|2. Our calculation includes full top and bottom quark mass dependence at all orders in the logarithmic part, and to hi... Read More about High energy resummed predictions for the production of a Higgs boson with at least one jet.

Bi-η and bi-λ deformations of ℤ4 permutation supercosets (2023)
Journal Article

Integrable string sigma models on AdS3 backgrounds with 16 supersymmetries have the distinguishing feature that their superisometry group is a direct product. As a result the deformation theory of these models is particularly rich since the two super... Read More about Bi-η and bi-λ deformations of ℤ4 permutation supercosets.

The present and future status of heavy neutral leptons (2023)
Journal Article

The existence of nonzero neutrino masses points to the likely existence of multiple Standard Model neutral fermions. When such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (HNLs).... Read More about The present and future status of heavy neutral leptons.

Fermionic spectral walls in kink collisions (2022)
Journal Article

We show that a spectral wall, i.e., an obstacle in the dynamics of a bosonic soliton, which arises due to the transition of a normal mode into the continuum spectrum, exists after coupling the original bosonic model to fermions. This spectral wall ca... Read More about Fermionic spectral walls in kink collisions.

Transverse momentum resummation at N3LL+NNLO for diboson processes (2023)
Journal Article

Diboson processes are one of the most accessible and stringent probes of the electroweak gauge structure of the Standard Model at the LHC. They will be probed at the percent level at the high-luminosity LHC, challenging current theory predictions. We... Read More about Transverse momentum resummation at N3LL+NNLO for diboson processes.

NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region (2023)
Journal Article

We compute next-to-next-to-leading order (NNLO) QCD corrections to neutral vector boson production in association with a charm jet at the LHC. This process is studied in the forward kinematics at s√=13 TeV, which may provide valuable constraints on t... Read More about NNLO QCD predictions for Z-boson production in association with a charm jet within the LHCb fiducial region.

Cluster Hadronisation in Sherpa (2022)
Journal Article

We present the Sherpa cluster hadronization model and a simple model for non-perturbative colour reconnections. Using two different parton shower implementations we tuned the model to data and we show typical resulting distributions that are sensitiv... Read More about Cluster Hadronisation in Sherpa.

NNLO interpolation grids for jet production at the LHC (2022)
Journal Article

Fast interpolation-grid frameworks facilitate an efficient and flexible evaluation of higher-order predictions for any choice of parton distribution functions or value of the strong coupling αs. They constitute an essential tool for the extraction of... Read More about NNLO interpolation grids for jet production at the LHC.

Quantum optimization of complex systems with a quantum annealer (2022)
Journal Article

We perform an in-depth comparison of quantum annealing with several classical optimization techniques, namely, thermal annealing, Nelder-Mead, and gradient descent. The focus of our study is large quasicontinuous potentials that must be encoded using... Read More about Quantum optimization of complex systems with a quantum annealer.

Radiative phase space extensions at all orders in r for self-dual Yang-Mills and gravity (2023)
Journal Article

Working in the self-dual sector for Yang-Mills and gravity, we show how to construct an extended phase space at null infinity, to all orders in the radial expansion. This formalises the symmetry origin of the infrared behaviour of these theories to a... Read More about Radiative phase space extensions at all orders in r for self-dual Yang-Mills and gravity.

Transverse mass distribution and charge asymmetry in W boson production to third order in QCD (2023)
Journal Article

Charged gauge boson production at hadron colliders is a fundamental benchmark for the extraction of electroweak parameters and the understanding of the proton structure. To enable precision phenomenology for this process, we compute the third-order (... Read More about Transverse mass distribution and charge asymmetry in W boson production to third order in QCD.