| Report number | arXiv:2308.05587 ; CERN-EP-2023-161 |
| Title | Search for dark photons with the FASER detector at the LHC |
| Author(s) |
Abreu, Henso (Technion) ; Anders, John Kenneth (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.) ; Boeckh, Tobias (Bonn U.) ; Boyd, Jamie (CERN) ; Brenner, Lydia (NIKHEF, Amsterdam) ; Cadoux, Franck (Geneva U.) ; Casper, David W. (UC, Irvine) ; Cavanagh, Charlotte (U. Liverpool (main)) ; Chen, Xin (Tsinghua U., Beijing) ; Coccaro, Andrea (INFN, Genoa) ; D'Onofrio, Monica (U. Liverpool (main)) ; Desai, Ansh (Oregon U.) ; Dmitrievsky, Sergey (Unlisted) ; Dozen, Candan (IP2I, Lyon) ; Favre, Yannick (Geneva U.) ; Fellers, Deion (Oregon U.) ; Feng, Jonathan L. (UC, Irvine) ; Fenoglio, Carlo Alberto (Geneva U.) ; Ferrere, Didier (Geneva U.) ; Galon, Iftah ; Gibson, Stephen (Royal Holloway, U. of London) ; Gonzalez-Sevilla, Sergio (Geneva U.) ; Gornushkin, Yuri (Unlisted) ; Gwilliam, Carl (U. Liverpool (main)) ; Hayakawa, Daiki (Chiba U.) ; Hsu, Shih-Chieh (Washington U., Seattle) ; Hu, Zhen (Tsinghua U., Beijing) ; Iacobucci, Giuseppe (Geneva U.) ; Inada, Tomohiro (Tsinghua U., Beijing) ; 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.) ; Kose, Umut (CERN) ; Kotitsa, Rafaella (CERN) ; Kuehn, Susanne (CERN) ; Lefebvre, Helena (Royal Holloway, U. of London) ; Levinson, Lorne (Weizmann Inst.) ; Li, Ke (Washington U., Seattle) ; Liu, Jinfeng (Tsinghua U., Beijing) ; MacDonald, Jack (Mainz U., Inst. Phys.) ; Magliocca, Chiara (Geneva U.) ; Martinelli, Fulvio (Geneva U.) ; McFayden, Josh (Sussex U.) ; Meehan, Sam (CERN ; IACS, Kolkata) ; Milanesio, Matteo (Geneva U.) ; Moretti, Théo (Geneva U.) ; Munker, Magdalena (Geneva U.) ; Nakamura, Mitsuhiro (Nagoya U.) ; Nakano, Toshiyuki (Nagoya U.) ; Neuhaus, Friedemann (Mainz U., Inst. Phys.) ; Nevay, Laurie (CERN ; Royal Holloway, U. of London) ; Ohashi, Ken (Bern U., LHEP) ; Otono, Hidetoshi (Kyushu U., Fukuoka (main)) ; Pang, Hao (Tsinghua U., Beijing) ; Paolozzi, Lorenzo (Geneva U. ; CERN) ; Petersen, Brian (CERN) ; Prim, Markus (Bonn U.) ; Queitsch-Maitland, Michaela (Manchester U.) ; Rokujo, Hiroki (Nagoya U.) ; Ruiz-Choliz, Elisa (Mainz U., Inst. Phys.) ; Sabater-Iglesias, Jorge (Geneva U.) ; Salfeld-Nebgen, Jakob (CERN) ; Sato, Osamu (Nagoya U.) ; Scampoli, Paola (Bern U., LHEP ; Naples U.) ; Schmieden, Kristof (Mainz U., Inst. Phys.) ; Schott, Matthias (Mainz U., Inst. Phys.) ; Sfyrla, Anna (Geneva U.) ; Shively, Savannah (UC, Irvine) ; Takubo, Yosuke (KEK, Tsukuba) ; Tarannum, Noshin (Geneva U.) ; Theiner, Ondrej (Geneva U.) ; Torrence, Eric (Oregon U.) ; Trojanowski, Sebastian (Warsaw, Copernicus Astron. Ctr. ; NCBJ, Warsaw) ; Vasina, Svetlana (Unlisted) ; Vormwald, Benedikt (CERN) ; Wang, Di (Tsinghua U., Beijing) ; Welch, Eli (UC, Irvine) ; Zahorec, Samuel (CERN ; Charles U.) ; Zambito, Stefano (Geneva U.) |
| Publication | 2023-12-07 |
| Imprint | 2023-08-10 |
| Number of pages | 10 |
| Published in: | Phys. Lett. B 848 (2024) 138378 |
| DOI | 10.1016/j.physletb.2023.138378 |
| Subject category | hep-ex ; Particle Physics - Experiment ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC ; FASER |
| Keywords | FASER ; Dark Photon ; B - L ; LLP ; Long-lived Particles |
| Abstract | The FASER experiment at the LHC is designed to search for light, weakly-interacting particles produced in proton-proton collisions at the ATLAS interaction point that travel in the far-forward direction. The first results from a search for dark photons decaying to an electron-positron pair, using a dataset corresponding to an integrated luminosity of $27.0 \mathrm{fb}^{-1}$ collected at center-of-mass energy $\sqrt{s} = 13.6$ TeV in 2022 in LHC Run 3, are presented. No events are seen in an almost background-free analysis, yielding world-leading constraints on dark photons with couplings $\epsilon \sim 2 \times 10^{-5} - 1 \times 10^{-4}$ and masses $\sim 17 \text{MeV}- 70 \text{MeV}$. The analysis is also used to probe the parameter space of a massive gauge boson from a U(1)$_{B-L}$ model, with couplings $g_{B-L} \sim 5\times10^{-6} - 2\times10^{-5}$ and masses $\sim 15 \text{MeV} - 40 \text{MeV}$ excluded for the first time. |
| Other source | Inspire |
| Copyright/License | Preprint: © 2023-2024 CERN (License: CC-BY-4.0) Publication: © 2023 Published by Elsevier B.V. (License: CC BY 4.0), sponsored by SCOAP³ |
| Submitted by | [email protected] |
Registro creado el 2023-07-10, última modificación el 2024-12-09
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