| Thesis | |
| Report number | CERN-FASER-THESIS-2024-001 |
| Title | A Search for Dark Photons with the FASER Detector at the LHC |
| Author(s) | Fellers, Deion Elgin (Oregon U.) ; Torrence, Eric (Oregon U.) |
| Collaboration | FASER Collaboration |
| Publication | 2024 - 179. |
| Note | Presented Jun 2024 |
| Accelerator/Facility, Experiment | FASER |
| Keywords | FASER ; Dark Photons ; Dark Matter ; Beyond the Standard Model ; BSM |
| 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. FASER is sensitive to probing previously unconstrained dark photon models, which is a theoretical particle that could provide a portal between the standard model of particle physics and a dark sector that contains a dark matter particle. This dissertation presents the first results from a search for dark photons decaying to an electron-positron pair in FASER, using a dataset corresponding to an integrated luminosity of 27 fb$^{-1}$ collected at center- of-mass energy $\sqrt{s}$ = 13.6TeV in 2022 in LHC Run 3. 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. This dissertation contains previously published as well as unpublished co-authored materials. |
| Copyright/License | © 2024-2025 The author (License: CC BY-NC-ND 3.0 US) |
Email contact: [email protected]
Record created 2024-05-15, last modified 2024-11-19
