SciPost Submission Page
FASER experiment and first results from LHC Run 3
by Umut Kose
Submission summary
| Authors (as registered SciPost users): | Umut Kose |
| Submission information | |
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| Preprint Link: | scipost_202405_00034v1 (pdf) |
| Date submitted: | 2024-05-22 20:55 |
| Submitted by: | Kose, Umut |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 17th International Workshop on Tau Lepton Physics (TAU2023) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
FASER is designed to search for light, extremely weakly interacting and long-lived beyond standard model particles at the CERN Large Hadron Collider. Such particles, e.g., dark photons, may be produced in the high-energy proton-proton collisions at the ATLAS interaction point and then decay to visible particles in FASER, which is placed 480 m downstream and aligned with the collision axis line-of-sight. The detector covers a previously unexplored range of pseudorapidity larger than 8.8, which allows it to have sensitivity to new physics in the far-forward region. FASER also has a sub-detector called FASER$\nu$, which is specifically designed to detect and investigate high-energy collider neutrino interactions in the TeV regime, extending current cross-section measurements. In this proceeding, the FASER detector and present recent results obtained during LHC Run 3 will be introduced.
Current status:
Reports on this Submission
Report #1 by Swagato Banerjee (Referee 1) on 2024-11-28 (Invited Report)
Report
The FASER experiment at the LHC is designed to explore forward physics, enabling the search for long-lived particles like dark photons and the study of TeV neutrinos from pp collisions at the interaction point of the ATLAS experiment. The FASER detector is placed 480 m downstream and aligned with the line-of-sight axis of the beam collisions. The detector covers a previously unexplored range of pseudorapidity larger than 8.8, which allows it to have sensitivity to new physics in the far-forward region. In addition to seeing all three kinds of neutrino's, if dark photons interact with Standard Model particles, they could potentially be produced in high-energy pp collisions at the LHC, establishing FASER as a dark photon factory. Using 35.4 fb-1 of data collected at a center-of-mass energy of 13.6 TeV, between July and November 2022, a total of 153 neutrino events were observed with a signficance of 16 standard deviatons. These results represent the beginning of FASER’s extensive physics program, which targets both beyond the Standard Model physics and neutrino physics.
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