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

ATLAS Publications, J.F. Allen, T.M. Carter, D. Duda, J.M. Gargan, R.Y. Gonzalez Andana, A. Hasib, V.A. Parrish, E.A. Pender, T. Qiu, E.P. Takeva, N. Themistokleous, E.M. Villhauer, Z. Xu, E. Zaid

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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 √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.
Original languageEnglish
Article number234
Pages (from-to)1-37
Number of pages37
Journal Journal of High Energy Physics
Volume2023
Issue number7
DOIs
Publication statusPublished - 31 Jul 2023

Keywords / Materials (for Non-textual outputs)

  • CP Violation
  • Hadron-Hadron Scattering

Fingerprint

Dive into the research topics of 'Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS'. Together they form a unique fingerprint.

Cite this