TY  - JOUR
AU  - Mammen Abraham, Roshan
AU  - Ai, Xiaocong
AU  - Anders, John
AU  - Antel, Claire
AU  - Ariga, Akitaka
AU  - Ariga, Tomoko
AU  - Atkinson, Jeremy
AU  - Bernlochner, Florian U.
AU  - Bianchi, Emma
AU  - Boeckh, Tobias
AU  - Boyd, Jamie
AU  - Brenner, Lydia
AU  - Burger, Angela
AU  - Cadoux, Franck
AU  - Cardella, Roberto
AU  - Casper, David W.
AU  - Cavanagh, Charlotte
AU  - Chen, Xin
AU  - Cho, Eunhyung
AU  - Chouhan, Dhruv
AU  - Coccaro, Andrea
AU  - Débieux, Stephane
AU  - D'Onofrio, Monica
AU  - Desai, Ansh
AU  - Dmitrievsky, Sergey
AU  - Dobre, Radu
AU  - Eley, Sinead
AU  - Favre, Yannick
AU  - Fellers, Deion
AU  - Feng, Jonathan L.
AU  - Fenoglio, Carlo Alberto
AU  - Ferrere, Didier
AU  - Fieg, Max
AU  - Filali, Wissal
AU  - Firu, Elena
AU  - Galantay, Edward
AU  - Garabaglu, Ali
AU  - Gibson, Stephen
AU  - Gonzalez-Sevilla, Sergio
AU  - Gornushkin, Yuri
AU  - Gwilliam, Carl
AU  - Hayakawa, Daiki
AU  - Holzbock, Michael
AU  - Hsu, Shih-Chieh
AU  - Hu, Zhen
AU  - Iacobucci, Giuseppe
AU  - Inada, Tomohiro
AU  - Iodice, Luca
AU  - Jakobsen, Sune
AU  - Joos, Hans
AU  - Kajomovitz, Enrique
AU  - Kawahara, Hiroaki
AU  - Keyken, Alex
AU  - Kling, Felix
AU  - Köck, Daniela
AU  - Kontaxakis, Pantelis
AU  - Kose, Umut
AU  - Kotitsa, Rafaella
AU  - Kuehn, Susanne
AU  - Kugathasan, Thanushan
AU  - Levinson, Lorne
AU  - Li, Ke
AU  - Liu, Jinfeng
AU  - Liu, Yi
AU  - Lutz, Margaret S.
AU  - MacDonald, Jack
AU  - Magliocca, Chiara
AU  - Mäkelä, Toni
AU  - McCoy, Lawson
AU  - McFayden, Josh
AU  - Medina, Andrea Pizarro
AU  - Milanesio, Matteo
AU  - Moretti, Théo
AU  - Nakamura, Mitsuhiro
AU  - Nakano, Toshiyuki
AU  - Nevay, Laurie
AU  - Ohashi, Ken
AU  - Otono, Hidetoshi
AU  - Paolozzi, Lorenzo
AU  - Petersen, Brian
AU  - Preda, Titi
AU  - Prim, Markus
AU  - Queitsch-Maitland, Michaela
AU  - Rokujo, Hiroki
AU  - Rubbia, André
AU  - Sabater-Iglesias, Jorge
AU  - Sato, Osamu
AU  - Scampoli, Paola
AU  - Schmieden, Kristof
AU  - Schott, Matthias
AU  - Sfyrla, Anna
AU  - Sgalaberna, Davide
AU  - Shamim, Mansoora
AU  - Shively, Savannah
AU  - Takubo, Yosuke
AU  - Tarannum, Noshin
AU  - Theiner, Ondrej
AU  - Torrence, Eric
AU  - Martinez, Oscar Ivan Valdes
AU  - Vasina, Svetlana
AU  - Vormwald, Benedikt
AU  - Wang, Di
AU  - Wang, Yuxiao
AU  - Welch, Eli
AU  - Xu, Yue
AU  - Zahorec, Samuel
AU  - Zambito, Stefano
AU  - Zhang, Shunliang
TI  - Shining light on the dark sector: search for axion-like particles and other new physics in photonic final states with FASER
JO  - Journal of high energy physics
VL  - 01
IS  - 1
SN  - 1126-6708
CY  - Heidelberg
PB  - Springer
M1  - PUBDB-2024-06306
M1  - CERN-EP-2024-262
M1  - DESY-24-153
M1  - arXiv:2410.10363
SP  - 199
PY  - 2024
N1  - to be submitted to journal
AB  - 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]
KW  - Beyond Standard Model (autogen)
KW  - Dark Matter (autogen)
KW  - Forward Physics (autogen)
KW  - Hadron-Hadron Scattering (autogen)
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1007/JHEP01(2025)199
UR  - https://bib-pubdb1.desy.de/record/616011
ER  -