%0 Journal Article
%A Mammen Abraham, Roshan
%A Ai, Xiaocong
%A Anders, John
%A Antel, Claire
%A Ariga, Akitaka
%A Ariga, Tomoko
%A Atkinson, Jeremy
%A Bernlochner, Florian U.
%A Bianchi, Emma
%A Boeckh, Tobias
%A Boyd, Jamie
%A Brenner, Lydia
%A Burger, Angela
%A Cadoux, Franck
%A Cardella, Roberto
%A Casper, David W.
%A Cavanagh, Charlotte
%A Chen, Xin
%A Cho, Eunhyung
%A Chouhan, Dhruv
%A Coccaro, Andrea
%A Débieux, Stephane
%A D'Onofrio, Monica
%A Desai, Ansh
%A Dmitrievsky, Sergey
%A Dobre, Radu
%A Eley, Sinead
%A Favre, Yannick
%A Fellers, Deion
%A Feng, Jonathan L.
%A Fenoglio, Carlo Alberto
%A Ferrere, Didier
%A Fieg, Max
%A Filali, Wissal
%A Firu, Elena
%A Galantay, Edward
%A Garabaglu, Ali
%A Gibson, Stephen
%A Gonzalez-Sevilla, Sergio
%A Gornushkin, Yuri
%A Gwilliam, Carl
%A Hayakawa, Daiki
%A Holzbock, Michael
%A Hsu, Shih-Chieh
%A Hu, Zhen
%A Iacobucci, Giuseppe
%A Inada, Tomohiro
%A Iodice, Luca
%A Jakobsen, Sune
%A Joos, Hans
%A Kajomovitz, Enrique
%A Kawahara, Hiroaki
%A Keyken, Alex
%A Kling, Felix
%A Köck, Daniela
%A Kontaxakis, Pantelis
%A Kose, Umut
%A Kotitsa, Rafaella
%A Kuehn, Susanne
%A Kugathasan, Thanushan
%A Levinson, Lorne
%A Li, Ke
%A Liu, Jinfeng
%A Liu, Yi
%A Lutz, Margaret S.
%A MacDonald, Jack
%A Magliocca, Chiara
%A Mäkelä, Toni
%A McCoy, Lawson
%A McFayden, Josh
%A Medina, Andrea Pizarro
%A Milanesio, Matteo
%A Moretti, Théo
%A Nakamura, Mitsuhiro
%A Nakano, Toshiyuki
%A Nevay, Laurie
%A Ohashi, Ken
%A Otono, Hidetoshi
%A Paolozzi, Lorenzo
%A Petersen, Brian
%A Preda, Titi
%A Prim, Markus
%A Queitsch-Maitland, Michaela
%A Rokujo, Hiroki
%A Rubbia, André
%A Sabater-Iglesias, Jorge
%A Sato, Osamu
%A Scampoli, Paola
%A Schmieden, Kristof
%A Schott, Matthias
%A Sfyrla, Anna
%A Sgalaberna, Davide
%A Shamim, Mansoora
%A Shively, Savannah
%A Takubo, Yosuke
%A Tarannum, Noshin
%A Theiner, Ondrej
%A Torrence, Eric
%A Martinez, Oscar Ivan Valdes
%A Vasina, Svetlana
%A Vormwald, Benedikt
%A Wang, Di
%A Wang, Yuxiao
%A Welch, Eli
%A Xu, Yue
%A Zahorec, Samuel
%A Zambito, Stefano
%A Zhang, Shunliang
%T Shining light on the dark sector: search for axion-like particles and other new physics in photonic final states with FASER
%J Journal of high energy physics
%V 01
%N 1
%@ 1126-6708
%C Heidelberg
%I Springer
%M PUBDB-2024-06306
%M CERN-EP-2024-262
%M DESY-24-153
%M arXiv:2410.10363
%P 199
%D 2024
%Z to be submitted to journal
%X The first FASER search for a light, long-lived particle decaying into a pair of photons is reported. The search uses LHC proton-proton collision data at  √s  = 13.6 TeV collected in 2022 and 2023, corresponding to an integrated luminosity of 57.7 fb<sup>−1</sup>. A model with axion-like particles (ALPs) dominantly coupled to weak gauge bosons is the primary target. Signal events are characterised by high-energy deposits in the electromagnetic calorimeter and no signal in the veto scintillators. One event is observed, compared to a background expectation of 0.44 ± 0.39 events, which is entirely dominated by neutrino interactions. World-leading constraints on ALPs are obtained for masses up to 300 MeV and couplings to the Standard Model W gauge boson, g<sub>aWW</sub>, around 10<sup>−4</sup> GeV<sup>−1</sup>, testing a previously unexplored region of parameter space. Other new particle models that lead to the same experimental signature, including ALPs coupled to gluons or photons, U(1)<sub>B</sub> gauge bosons, up-philic scalars, and a Type-I two-Higgs doublet model, are also considered for interpretation, and new constraints on previously viable parameter space are presented in this paper.[graphic not available: see fulltext]
%K Beyond Standard Model (autogen)
%K Dark Matter (autogen)
%K Forward Physics (autogen)
%K Hadron-Hadron Scattering (autogen)
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1007/JHEP01(2025)199
%U https://bib-pubdb1.desy.de/record/616011