Searching for muonic forces with the ATLAS detector

Iftah Galon, Enrique Kajamovitz, David Shih, Yotam Soreq, Shlomit Tarem
2020 Physical Review D  
The LHC copiously produces muons via different processes, and the muon sample will be large at the high-luminosity LHC (HL-LHC). In this work we propose to leverage this large muon sample and utilize the HL-LHC as a muon fixed-target experiment, with the ATLAS calorimeter as the target. We consider a novel analysis for the ATLAS detector, which takes advantage of the two independent muon momentum measurements by the inner detector and the muon system. We show that a comparison of the two
more » ... n of the two measurements, before and after the calorimeters, can probe new force carriers that are coupled to muons and escape detection. The proposed analysis, based on muon samples from W and Z decays only, has a comparable reach to other proposals. In particular, it can explore the part of parameter space that could explain the muon g − 2 anomaly.
doi:10.1103/physrevd.101.011701 fatcat:qifzgsk2ozf3ze4xfvrbzb7nwe