Search for Stopped Gluinos in pp Collisions at √s=7  TeV

Abstract

The results of the first search for long-lived gluinos produced in 7 TeV pp collisions at the CERN Large Hadron Collider are presented. The search looks for evidence of long-lived particles that stop in the CMS detector and decay in the quiescent periods between beam crossings. In a dataset with a peak instantaneous luminosity of 1 × 10^(32)  cm^(-2) s^(-1), an integrated luminosity of 10  pb^(-1), and a search interval corresponding to 62 hours of LHC operation, no significant excess above background was observed. Limits at the 95% confidence level on gluino pair production over 13 orders of magnitude of gluino lifetime are set. For a mass difference mg˜ - mχ˜_0^1>100  GeV/c^2, and assuming BR(g˜→ gχ˜^0_1)=100%, mg˜<370  GeV/c^2 are excluded for lifetimes from 10  μs to 1000 s.

Files

Additional details