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. [Figure not available: see fulltext.]

Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS / Betti, A.; De Salvo, A.; Di Domenico, A.; Dionisi, C.; Bini, C.; Luci, C.; Pompa Pacchi, E.; Morodei, F.; Lacava, F.; Safai Tehrani, F.; Artoni, G.; Santi, L.; Russo, G.; Martinelli, L.; Maiani, L; Bauce, M.; Gauzzi, P.; Gentile, S.; Falciano, S.; Giagu, S.; Ippolito, V.; Padovano, G.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:7(2023), pp. 1-36. [10.1007/JHEP07(2023)234]

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

Betti A.;De Salvo A.;Di Domenico A.;Dionisi C.;Bini C.;Luci C.;Pompa Pacchi E.;Morodei F.;Lacava F.;Safai Tehrani F.;Artoni G.;Santi L.;Russo G.;Martinelli L.;Maiani L;Bauce M.;Gauzzi P.;Gentile S.;Falciano S.;Giagu S.;Ippolito V.;Padovano G.
2023

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. [Figure not available: see fulltext.]
2023
CP violation; hadron-hadron scattering; ATLAS
01 Pubblicazione su rivista::01a Articolo in rivista
Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS / Betti, A.; De Salvo, A.; Di Domenico, A.; Dionisi, C.; Bini, C.; Luci, C.; Pompa Pacchi, E.; Morodei, F.; Lacava, F.; Safai Tehrani, F.; Artoni, G.; Santi, L.; Russo, G.; Martinelli, L.; Maiani, L; Bauce, M.; Gauzzi, P.; Gentile, S.; Falciano, S.; Giagu, S.; Ippolito, V.; Padovano, G.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2023:7(2023), pp. 1-36. [10.1007/JHEP07(2023)234]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1694101
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