@misc{10481/84785,
year = {2023},
month = {7},
url = {https://hdl.handle.net/10481/84785},
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 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.},
organization = {CERN},
organization = {MICINN, Spain},
organization = {European Cooperation in Science and Technology
 COST},
organization = {European Research Council
 	ERC},
organization = {European Regional Development Fund
 	ERDF},
organization = {Horizon 2020 Marie Skłodowska-Curie Actions},
organization = {European Union},
organization = {EU-ESF},
organization = {La Caixa
Banking Foundation},
organization = {Generalitat de Catalunya},
organization = {PROMETEO},
organization = {Generalitat Valenciana, Spain},
organization = {PIC (Spain)},
publisher = {Springer Nature},
keywords = {CP Violation},
keywords = {Hadron-Hadron Scattering},
title = {Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS},
doi = {10.1007/JHEP07(2023)234},
author = {Atlas Collaboration and Aad, Georges and Rodríguez Chala, Mikael},
}