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@ARTICLE{MammenAbraham:615858,
author = {Mammen Abraham, Roshan and Ai, Xiaocong and Anders, John
and Antel, Claire and Ariga, Akitaka and Ariga, Tomoko and
Atkinson, Jeremy and Bernlochner, Florian U. and Bianchi,
Emma and Boeckh, Tobias and Boyd, Jamie and Brenner, Lydia
and Burger, Angela and Cadoux, Franck and Cardella, Roberto
and Casper, David W. and Cavanagh, Charlotte and Chen, Xin
and Cho, Eunhyung and Chouhan, Dhruv and Coccaro, Andrea and
Débieux, Stephane and D'Onofrio, Monica and Desai, Ansh and
Dmitrievsky, Sergey and Dobre, Radu and Eley, Sinead and
Favre, Yannick and Fellers, Deion and Feng, Jonathan L. and
Fenoglio, Carlo Alberto and Ferrere, Didier and Fieg, Max
and Filali, Wissal and Firu, Elena and Galantay, Edward and
Garabaglu, Ali and Gibson, Stephen and Gonzalez-Sevilla,
Sergio and Gornushkin, Yuri and Gwilliam, Carl and Hayakawa,
Daiki and Holzbock, Michael and Hsu, Shih-Chieh and Hu, Zhen
and Iacobucci, Giuseppe and Inada, Tomohiro and Iodice, Luca
and Jakobsen, Sune and Joos, Hans and Kajomovitz, Enrique
and Kawahara, Hiroaki and Keyken, Alex and Kling, Felix and
Köck, Daniela and Kontaxakis, Pantelis and Kose, Umut and
Kotitsa, Rafaella and Kuehn, Susanne and Kugathasan,
Thanushan and Levinson, Lorne and Li, Ke and Liu, Jinfeng
and Liu, Yi and Lutz, Margaret S. and MacDonald, Jack and
Magliocca, Chiara and Mäkelä, Toni and McCoy, Lawson and
McFayden, Josh and Medina, Andrea Pizarro and Milanesio,
Matteo and Moretti, Théo and Nakamura, Mitsuhiro and
Nakano, Toshiyuki and Nevay, Laurie and Ohashi, Ken and
Otono, Hidetoshi and Paolozzi, Lorenzo and Petersen, Brian
and Preda, Titi and Prim, Markus and Queitsch-Maitland,
Michaela and Rokujo, Hiroki and Rubbia, André and
Sabater-Iglesias, Jorge and Sato, Osamu and Scampoli, Paola
and Schmieden, Kristof and Schott, Matthias and Sfyrla, Anna
and Sgalaberna, Davide and Shamim, Mansoora and Shively,
Savannah and Takubo, Yosuke and Tarannum, Noshin and
Theiner, Ondrej and Torrence, Eric and Martinez, Oscar Ivan
Valdes and Vasina, Svetlana and Vormwald, Benedikt and Wang,
Di and Wang, Yuxiao and Welch, Eli and Xu, Yue and Zahorec,
Samuel and Zambito, Stefano and Zhang, Shunliang},
collaboration = {{FASER Collaboration}},
title = {{S}hining {L}ight on the {D}ark {S}ector: {S}earch for
{A}xion-like {P}articles and {O}ther {N}ew {P}hysics in
{P}hotonic {F}inal {S}tates with {FASER}},
reportid = {PUBDB-2024-06299, arXiv:2410.10363. CERN-EP-2024-262.
DESY-24-153},
year = {2024},
note = {to be submitted to journal},
abstract = {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
$\sqrt{s}=13.6~\text{TeV}$ collected in 2022 and 2023,
corresponding to an integrated luminosity of
$57.7\text{fb}^{-1}$. 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 $0.44 \pm 0.39$
events, which is entirely dominated by neutrino
interactions. World-leading constraints on ALPs are obtained
for masses up to $300~\text{MeV}$ and couplings to the
Standard Model W gauge boson, $g_{aWW}$, around $10^{-4}$
GeV$^{-1}$, 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)$_B$ 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.},
keywords = {High Energy Physics - Experiment (hep-ex) (Other) / FOS:
Physical sciences (Other)},
cin = {T},
ddc = {530},
cid = {I:(DE-H253)T-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611) / DFG
project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe
(390833306)},
pid = {G:(DE-HGF)POF4-611 / G:(GEPRIS)390833306},
experiment = {EXP:(DE-H253)LHC-Exp-other-20150101},
typ = {PUB:(DE-HGF)25},
eprint = {2410.10363},
howpublished = {arXiv:2410.10363},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2410.10363;\%\%$},
doi = {10.3204/PUBDB-2024-06299},
url = {https://bib-pubdb1.desy.de/record/615858},
}