Search for Long-Lived Particles Decaying in the CMS End Cap Muon Detectors in Proton-Proton Collisions at s =13 TeV
Journal
Physical Review Letters
Journal Volume
127
Journal Issue
26
Date Issued
2021
Author(s)
Abstract
A search for long-lived particles (LLPs) produced in decays of standard model (SM) Higgs bosons is presented. The data sample consists of 137 fb-1 of proton-proton collisions at s=13 TeV, recorded at the LHC in 2016-2018. A novel technique is employed to reconstruct decays of LLPs in the end cap muon detectors. The search is sensitive to a broad range of LLP decay modes and to masses as low as a few GeV. No excess of events above the SM background is observed. The most stringent limits to date on the branching fraction of the Higgs boson to LLPs subsequently decaying to quarks and τ+τ- are found for proper decay lengths greater than 6, 20, and 40 m, for LLP masses of 7, 15, and 40 GeV, respectively. ? 2021 CERN.
Subjects
Charged particles; Data sample; Decay mode; End caps; Muon detectors; Novel techniques; Particle decay; Proton proton collisions; Standard-model Higgs bosons; Stringents; The standard model; Bosons; article; boson; quark
Type
journal article