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

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

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 p...

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Bibliographic Details
Main Authors: Alver, Burak Han, Bendavid, Joshua L., Busza, Wit, Butz, Erik M., Cali, Ivan Amos, Chan, M., Dutta, Valentina, Everaerts, Pieter Bruno Bart, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Hahn, Kristian Allan, Harris, Philip Coleman, Klute, Markus, Lee, Yen-Jie, Ma, Teng, Nahn, Steven, Paus, Christoph M. E., Rudolph, Matthew Scott, Stephans, George S. F., Sung, Kevin Kai Hong, Wenger, Edward Allen, Xie, Si, Yang, Mingming, Yilmaz, Yetkin, Zanetti, Marco, Bauer, Gerry P, Kim, Y., Li, W., Loizides, Constantinos, Luckey Jr, P David, Roland, Christof E, Roland, Gunther M, Sumorok, Konstanty C, Yoon, A. S.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2011
Online Access:http://hdl.handle.net/1721.1/64413
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0002-0869-5631
Description
Summary: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 1×1032 [1 x 10 superscript 32]  cm-2 s-1 [cm superscript -2 s superscript -1] , an integrated luminosity of 10  pb-1 [pb superscript -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˜10>100  GeV/c2 [m subscript _ g minus m subscript -0 over X subscript 1, greater than 100 GeV over c superscript 2], and assuming BR(g˜→gχ˜10)=100% [BR (g → g X -0 subscript 1 = 100%], mg˜<370  GeV/c2 [m subscript g less than 370 GeV over c superscript 2]are excluded for lifetimes from 10  μs [mu s] to 1000 s

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