Search for vector-mediated dark matter at the LHC with forward proton tagging

Gi-Chol Cho, Kimiko Yamashita, Miki Yonemura
2020 Physical Review D  
We investigate the production of fermionic dark matter χ via pp → pγp → pjχχX mediated by a leptophobic spin-1 particle, where one of the protons remains intact and is tagged by forward proton detectors. We find that the masses of χ and the mediator Z 0 are severely constrained when Z 0 interacts with χ and quarks through the vector couplings. We show that dark matter searches in this production channel are sensitive to a mediator mass m Z 0 ≲ 1.4 TeV at 14 TeV at the LHC with an integrated
more » ... h an integrated luminosity L int ¼ 3000 fb −1 . The lower mass bound on the dark matter is m χ ≃ 550 GeV at the mediator mass m Z 0 ¼ 1.2 TeV.
doi:10.1103/physrevd.101.035018 fatcat:bumv7ciqifaqxdj7dcwoylpvrm