Scientific article
OA Policy
English

Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, no. 7, 234
Publication date2023
First online date2023-07-31
Abstract

A search for forward proton scattering in association with light-by-light scattering mediated by an axion-like particle is presented, using the ATLAS Forward Proton spectrometer to detect scattered protons and the central ATLAS detector to detect pairs of outgoing photons. Proton-proton collision data recorded in 2017 at a centre-of-mass energy of $ \sqrt{s} $ = 13 TeV were analysed, corresponding to an integrated luminosity of 14.6 fb$^{−1}$. A total of 441 candidate events were selected. A search was made for a narrow resonance in the diphoton mass distribution, corresponding to an axion-like particle (ALP) with mass in the range 150–1600 GeV. No excess is observed above a smooth background. Upper limits on the production cross section of a narrow resonance are set as a function of the mass, and are interpreted as upper limits on the ALP production coupling constant, assuming 100% decay branching ratio into a photon pair. The inferred upper limit on the coupling constant is in the range 0.04–0.09 TeV$^{−1}$ at 95% confidence level.

Keywords
  • CP Violation
  • Hadron-Hadron Scattering
  • P p: scattering
  • P p: colliding beams
  • Photon: pair production
  • Mass spectrum: two-photon
  • P: spectrometer
  • Photon photon: scattering
  • Axion-like particles
  • Mass spectrum: (2photon)
  • ATLAS
  • CERN LHC Coll
  • Coupling constant: upper limit
  • Narrow resonance
  • Mediation
  • Background
  • Branching ratio
  • Channel cross section: upper limit
  • Mass dependence
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS. In: The journal of high energy physics, 2023, vol. 2023, n° 7, p. 234. doi: 10.1007/jhep07(2023)234
Main files (1)
Article (Published version)
Identifiers
Additional URL for this publicationhttps://link.springer.com/10.1007/JHEP07(2023)234
Journal ISSN1029-8479
51views
34downloads

Technical informations

Creation18/04/2024 07:17:53
First validation13/06/2024 13:20:47
Update time13/06/2024 13:20:47
Status update13/06/2024 13:20:47
Last indexation03/06/2025 11:43:34
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack