Shining Light on the Dark Sector: Search for Dark Photon and Axion Like Particles with FASER.
ORAL
Abstract
The FASER experiment at the LHC is designed to search for light, weakly-
interacting particles produced in proton-proton collisions at the ATLAS in-
teraction point that travel in the far-forward direction. During LHC Run 3
FASER has collected close to 200 fb−1 from 2022 to 2024 at center of mass
energy √s = 13.6 TeV. This talk will present result for Dark Photon decay to
an electron-positron pair and Axion Like Particles (ALPs) decay to a pair of
photons. In both cases signals are characterized by high-energy deposits in the
electromagnetic calorimeter and no signal in the veto scintillators with the Dark
Photon also leaving signals in downstream scintillators. In both cases FASER
has been able to set world leading constraints. The most recent results will be
presented.
interacting particles produced in proton-proton collisions at the ATLAS in-
teraction point that travel in the far-forward direction. During LHC Run 3
FASER has collected close to 200 fb−1 from 2022 to 2024 at center of mass
energy √s = 13.6 TeV. This talk will present result for Dark Photon decay to
an electron-positron pair and Axion Like Particles (ALPs) decay to a pair of
photons. In both cases signals are characterized by high-energy deposits in the
electromagnetic calorimeter and no signal in the veto scintillators with the Dark
Photon also leaving signals in downstream scintillators. In both cases FASER
has been able to set world leading constraints. The most recent results will be
presented.
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Publication: Abreu Henso, et al, FASER Collaboration, arXiv:2308.05587, Phys. Lett. B<br>Abraham Roshan Mammen, et al, FASER Collaboration, arXiv:2410.10363
Presenters
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Lawson M McCoy
University of California, Irvine
Authors
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Lawson M McCoy
University of California, Irvine