| Preprint | |
| Report number | arXiv:2410.10363 ; CERN-EP-2024-262 |
| Title | Shining Light on the Dark Sector - Searches for Axion-like Particles and Other New Physics in Photonic Final States with FASER |
| Author(s) |
Mammen Abraham, Roshan (UC, Irvine) ; Ai, Xiaocong (Zhengzhou U.) ; Anders, John (CERN) ; Antel, Claire (Geneva U.) ; Ariga, Akitaka (Bern U., LHEP ; Chiba U.) ; Ariga, Tomoko (Kyushu U., Fukuoka (main)) ; Atkinson, Jeremy (Bern U., LHEP) ; Bernlochner, Florian U. (Bonn U.) ; Bianchi, Emma (Geneva U.) ; Boeckh, Tobias (Bonn U.) ; Boyd, Jamie (CERN) ; Brenner, Lydia (NIKHEF, Amsterdam) ; Burger, Angela (CERN) ; Cadoux, Franck (Geneva U.) ; Cardella, Roberto (Geneva U.) ; Casper, David W. (UC, Irvine) ; Cavanagh, Charlotte (U. Liverpool (main)) ; Chen, Xin (Tsinghua U., Beijing) ; Cho, Eunhyung (Mainz U.) ; Chouhan, Dhruv (Bonn U.) ; Coccaro, Andrea (INFN, Genoa) ; Débieux, Stephane (Geneva U.) ; D'Onofrio, Monica (U. Liverpool (main)) ; Desai, Ansh (Oregon U.) ; Dmitrievsky, Sergey (Unlisted) ; Dobre, Radu (Bucharest, Inst. Space Science) ; Eley, Sinead (U. Liverpool (main)) ; Favre, Yannick (Geneva U.) ; Fellers, Deion (Oregon U.) ; Feng, Jonathan L. (UC, Irvine) ; Fenoglio, Carlo Alberto (Geneva U.) ; Ferrere, Didier (Geneva U.) ; Fieg, Max (UC, Irvine) ; Filali, Wissal (Bonn U.) ; Firu, Elena (Bucharest, Inst. Space Science) ; Garabaglu, Ali (Washington U., Seattle) ; Gibson, Stephen (Royal Holloway, U. of London) ; Gonzalez-Sevilla, Sergio (Geneva U.) ; Gornushkin, Yuri (Unlisted) ; Gwilliam, Carl (U. Liverpool (main)) ; Hayakawa, Daiki (Chiba U.) ; Holzbock, Michael (CERN) ; Hsu, Shih-Chieh (Washington U., Seattle) ; Hu, Zhen (Tsinghua U., Beijing) ; Iacobucci, Giuseppe (Geneva U.) ; Inada, Tomohiro (CERN) ; Iodice, Luca (Geneva U.) ; Jakobsen, Sune (CERN) ; Joos, Hans (CERN ; Gottingen U., II. Phys. Inst.) ; Kajomovitz, Enrique (Technion) ; Kawahara, Hiroaki (Kyushu U., Fukuoka (main)) ; Keyken, Alex (Royal Holloway, U. of London) ; Kling, Felix (DESY) ; Köck, Daniela (Oregon U.) ; Kontaxakis, Pantelis (Geneva U.) ; Kose, Umut (ETH, Zurich (main)) ; Kotitsa, Rafaella (CERN) ; Kuehn, Susanne (CERN) ; Kugathasan, Thanushan (Geneva U.) ; Levinson, Lorne (Weizmann Inst.) ; Li, Ke (Washington U., Seattle) ; Liu, Jinfeng (Tsinghua U., Beijing) ; Liu, Yi (Zhengzhou U.) ; Lutz, Margaret S. (CERN) ; MacDonald, Jack (Mainz U.) ; Magliocca, Chiara (Geneva U.) ; Mäkelä, Toni (UC, Irvine) ; McCoy, Lawson (UC, Irvine) ; McFayden, Josh (Sussex U.) ; Medina, Andrea Pizarro (Geneva U.) ; Milanesio, Matteo (Geneva U.) ; Moretti, Théo (Geneva U.) ; Nakamura, Mitsuhiro (Nagoya U.) ; Nakano, Toshiyuki (Nagoya U.) ; Nevay, Laurie (CERN) ; Ohashi, Ken (Bern U., LHEP) ; Otono, Hidetoshi (Kyushu U., Fukuoka (main)) ; Paolozzi, Lorenzo (Geneva U. ; CERN) ; Petersen, Brian (CERN) ; Preda, Titi (Bucharest, Inst. Space Science) ; Prim, Markus (Bonn U.) ; Queitsch-Maitland, Michaela (Manchester U.) ; Rokujo, Hiroki (Nagoya U.) ; Rubbia, André (ETH, Zurich (main)) ; Sabater-Iglesias, Jorge (Geneva U.) ; Sato, Osamu (Nagoya U.) ; Scampoli, Paola (Bern U., LHEP ; Naples U.) ; Schmieden, Kristof (Mainz U.) ; Schott, Matthias (Mainz U.) ; Sfyrla, Anna (Geneva U.) ; Sgalaberna, Davide (Zurich, ETH) ; Shamim, Mansoora (CERN) ; Shively, Savannah (UC, Irvine) ; Takubo, Yosuke (Niihama Tech. Coll.) ; Tarannum, Noshin (Geneva U.) ; Theiner, Ondrej (Geneva U.) ; Torrence, Eric (Oregon U.) ; Martinez, Oscar Ivan Valdes (Manchester U.) ; Vasina, Svetlana (Unlisted) ; Vormwald, Benedikt (CERN) ; Wang, Di (Tsinghua U., Beijing) ; Wang, Yuxiao (Tsinghua U., Beijing) ; Welch, Eli (UC, Irvine) ; Xu, Yue (Washington U., Seattle) ; Zahorec, Samuel (CERN ; Charles U.) ; Zambito, Stefano (Geneva U.) ; Zhang, Shunliang (Tsinghua U., Beijing) |
| Corporate author(s) | The FASER collaboration |
| Publication | 2024 |
| Imprint | 03 Oct 2024 |
| Number of pages | 37 |
| Note | 37 pages, 22 figures |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; FASER |
| Keywords | exotics ; forward physics ; experimental results ; FASER ; ALPs |
| Abstract | The first FASER search for a light, long-lived particle decaying into a pair of photons is reported. The search uses the collected 2022 and 2023 LHC proton-proton collision data at √s = 13.6 TeV, corresponding to an integrated luminosity of 57.7 fb−1 . A model with axion-like particles (ALPs) dominantly coupling to weak gauge bosons is the primary target, probing a mass range, ma, between 50 and 500 MeV and couplings to the Standard Model W gauge boson, gaWW , between 10−5 and 10−3 GeV−1. 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 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, with latest results presented in this paper. |
| Other source | Inspire |
| Copyright/License | Preprint: © 2024 CERN (License: CC-BY-4.0) |
| Submitted by | [email protected] |
ჩანაწერი შექმნილია 2024-10-03, ბოლოს შესწორებულია 2024-12-10
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