Hunting muonic forces at emulsion detectors

Akitaka Ariga, Reuven Balkin, Iftah Galon, Enrique Kajomovitz, Yotam Soreq

Research output: Contribution to journalArticlepeer-review


Only two types of Standard Model particles are able to propagate the 480meters separating the ATLAS interaction point and FASER: neutrinos and muons. Furthermore, muons are copiously produced in proton collisions. We propose to use FASERν as a muon fixed target experiment in order to search for new bosonic degrees of freedom coupled predominantly to muons. These muon force carriers are particularly interesting in light of the recent measurement of the muon anomalous magnetic moment. Using a novel analysis technique, we show that even in the current LHC run, FASERν could potentially probe previously unexplored parts of the parameter space. In the high-luminosity phase of the LHC, we find that the improved sensitivity of FASERν2 will probe unexplored parameter space and may be competitive with dedicated search proposals.

Original languageEnglish
Article number035003
JournalPhysical Review D
Issue number3
StatePublished - 1 Feb 2024

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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