Abreu, Henso, Anders, John, Antel, Claire, Ariga, Akitaka, Ariga, Tomoko, Atkinson, Jeremy, Bernlochner, Florian U, Boeckh, Tobias, Boyd, Jamie, Brenner, Lydia et al (show 78 more authors)
(2023)
Search for dark photons with the FASER detector at the LHC.
Physics Letters B, 848.
p. 138378.
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 fb−1 collected at centre-of-mass energy 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 ϵ∼2×10−5−1×10−4 and masses ∼17 MeV−70 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 gB−L∼5×10−6−2×10−5 and masses ∼15 MeV−40 MeV excluded for the first time.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 04 Mar 2024 09:00 |
| Last Modified: | 04 Mar 2024 09:02 |
| DOI: | 10.1016/j.physletb.2023.138378 |
| Open Access URL: | https://doi.org/10.1016/j.physletb.2023.138378 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3179065 |
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