Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
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Search for decays.pdf
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1.38 MB
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Adobe PDF
Checksum (MD5)
540eaa650569894100fbbbc90bbcda19
Author(s)
Taylor, Frank E
Date Issued
April 2012
Journal
The European Physical Journal C
Publisher
Springer-Verlag
Citation
The ATLAS Collaboration et al. “Search for Decays of Stopped, Long-Lived Particles from 7 TeV Pp Collisions with the ATLAS Detector.” The European Physical Journal C 72.4 (2012): n. pag. © 2012 CERN for the benefit of the ATLAS collaboration
Version
Final published version
Abstract
New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb[superscript −1]. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10[superscript −5] to 10[superscript 3] seconds and a neutralino mass of 100 GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-012-1965-6
