FASER’s physics reach for long-lived particles
By Faser Collaboration Akitaka Ariga, T. Ariga, J. Boyd, F. Cadoux, D. Casper, Y. Favre, Jonathan L. Feng, D. Ferrere, I. Galon, S. Gonzalez-Sevilla and 17 more. Physical Review D, 2018
315 citations recorded by the source corpus.
FASER,the ForwArd Search ExpeRiment,is a proposed experiment dedicated to searching for light, extremely weakly-interacting particles at the LHC. Such particles may be produced in the LHC's high-energy collisions and travel long distances through concrete and rock without interacting. They may then decay to visible particles in FASER, which is placed 480 m downstream of the ATLAS interaction point. In this work we briefly describe the FASER detector layout and the status of potential backgrounds. We then present the sensitivity reach for FASER for a large number of long-lived particle models, updating previous results to a uniform set of detector assumptions, and analyzing new models. In particular, we consider all of the renormalizable portal interactions, leading to dark photons, dark Higgs bosons, and heavy neutral leptons (HNLs); light B-L and $L_i - L_j$ gauge bosons; axion-like particles (ALPs) that are coupled dominantly to photons, fermions, and gluons through non-renormalizable operators; and pseudoscalars with Yukawa-like couplings. We find that FASER and its follow-up, FASER 2, have a full physics program, with discovery sensitivity in all of these models and potentially far-reaching implications for particle physics and cosmology.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/594b667f2fb5b8d27fd417d299d64255c7fd1527
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Citations in the corpus
- Expression of interest for the CODEX-b detector (2019, methodology): “[17, 65], by including the partial widths of ALP into light QCD degrees of freedom, using the same procedure as in Ref.”
- The Dark Photon (2020, background): “At this location, FASER (and possibly its larger successor FASER2) will enhance the LHC discovery potential by providing sensitivity to dark photons, dark Higgs bosons, heavy neutral leptons, axion-like particles, and many other proposed feebly-interacting particles (Ariga et al., 2019).”
- Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider (2019, background): “A summary on FASER’s physics reach for LLP can be found in [463].”