Foundation, HEP Software Aarrestad, Thea Amoroso, Simone Atkinson, Markus Julian Bendavid, Joshua Boccali, Tommaso Bocci, Andrea Buckley, Andy Cacciari, Matteo Calafiura, Paolo
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Common and community software packages, such as ROOT, Geant4 and event generators have been a key part of the LHC's success so far and continued development and optimisation will be critical in the future. The challenges are driven by an ambitious physics programme, notably the LHC accelerator upgrade to high-luminosity, HL-LHC, and the correspondi...

Del Debbio, Luigi Dobson, Elizabeth Jüttner, Andreas Kitching-Morley, Ben Lee, Joseph K.L. Nourry, Valentin Portelli, Antonin Rocha, Henrique Bergallo Skenderis, Kostas

A non-perturbative determination of the energy-momentum tensor is essential for understanding the physics of strongly coupled systems. The ability of the Wilson Flow to eliminate divergent contact terms makes it a practical method for renormalising the energy-momentum tensor on the lattice. In this paper, we utilise the Wilson Flow to define a proc...

Ikeda, Taishi Bernard, Laura Cardoso, Vitor Zilhão, Miguel

We show that light scalars can form quasi-bound states around binaries. In the non-relativistic regime, these states are formally described by the quantum-mechanical Schrodinger equation for a one-electron heteronuclear diatomic molecule. We performed extensive numerical simulations of scalar fields around black hole binaries showing that a scalar ...

Lacroix, Thomas Núñez-Castiñeyra, Arturo Stref, Martin Lavalle, Julien Nezri, Emmanuel

Reducing theoretical uncertainties in Galactic dark matter (DM) searches is an important challenge as several experiments are now delving into the parameter space relevant to popular (particle or not) candidates. Since many DM signal predictions rely on the knowledge of the DM velocity distribution---direct searches, capture by stars, p-wave-suppre...

Altinoluk, Tolga Boussarie, Renaud Marquet, Cyrille Taels, Pieter
Published in
Journal of High Energy Physics

We study the process γA →qq¯g\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ q\overline{q}g $$\end{document} + X in the Color Glass Condensate (CGC) effective theory. ...

Alimena, Juliette Beacham, James Borsato, Martino Cheng, Yangyang Vidal, Xabier Cid Cottin, Giovanna De Roeck, Albert Desai, Nishita Curtin, David Evans, Jared A.
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Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are di...

Kasieczka, Gregor Marzani, Simone Soyez, Gregory Stagnitto, Giovanni
Published in
Journal of High Energy Physics

The past few years have seen a rapid development of machine-learning algorithms. While surely augmenting performance, these complex tools are often treated as black-boxes and may impair our understanding of the physical processes under study. The aim of this paper is to move a first step into the direction of applying expert-knowledge in particle p...

Acharya, A. Adhikary, H. Aduszkiewicz, A. Andronov, E.V. Antićić, T. Babkin, V. Baszczyk, M. Bhosale, S. Blondel, A. Bogomilov, M.
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Measurements of multiplicity fluctuations of identified hadrons produced in inelastic p+p interactions at 31, 40, 80, and 158 GeV/$c$ beam momentum are presented. Four different measures of multiplicity fluctuations are used: the scaled variance $\omega$ and strongly intensive measures $\Sigma$, $\Phi$ and $\Delta$. These fluctuation measures invol...

Gervalle, Romain Volkov, Mikhail S.

We study asymptotically flat black holes with massive graviton hair within the ghost-free bigravity theory. There have been contradictory statements in the literature about their existence -- such solutions were reported some time ago, but later a different group claimed the Schwarzschild solution to be the only asymptotically flat black hole in th...

Auclair, Pierre G.

Numerical simulations and analytical models suggest that infinite cosmic strings produce cosmic string loops of all sizes with a given power-law. Precise estimations of the power-law exponent are still matter of debate while numerical simulations do not incorporate all the radiation and back-reaction effects expected to affect the network at small ...