Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-11-07
Karlsruhe 2010, Proceedings of the XXX Physics in Collision Symposium, 297-300
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, to appear in the proceedings for the XXX Physics in Collision International Symposium, Karlsruhe, Germany, September
Scientific paper
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 10^-32 /cm^2/s, an integrated luminosity of 10/pb, 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 (m_gluino-m_neutralino)>100 GeV/c^2, and assuming BR(gluino-> g neutralino)=100%, m_gluino < 370 GeV/c^2 are excluded for lifetimes from 10^-6 s to 1000 s.
for the CMS Collaboration
Ratnikov Fedor
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