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Search for stopped gluinos in pp collisions at √s=7  TeV


CMS Collaboration; Khachatryan, V; Amsler, C; Chiochia, V (2011). Search for stopped gluinos in pp collisions at √s=7 TeV. Physical Review Letters, 106(1):011801.

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 1×1032  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˜10>100  GeV/c2, and assuming BR(g˜→gχ˜10)=100%, mg˜<370  GeV/c2 are excluded for lifetimes from 10  μs to 1000 s. Published by The American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2011 CERN, for the CMS Collaboration

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  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˜10>100  GeV/c2, and assuming BR(g˜→gχ˜10)=100%, mg˜<370  GeV/c2 are excluded for lifetimes from 10  μs to 1000 s. Published by The American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2011 CERN, for the CMS Collaboration

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Additional indexing

Other titles:Search for stopped gluinos in pp collisions at sqrt s = 7 TeV
Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:14 Feb 2012 09:23
Last Modified:05 Apr 2016 15:35
Publisher:American Physical Society
ISSN:0031-9007 (P) 1079-7114 (E)
Publisher DOI:https://doi.org/10.1103/PhysRevLett.106.011801
Related URLs:http://arxiv.org/abs/1011.5861
Permanent URL: https://doi.org/10.5167/uzh-58555

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