Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

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...

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Main Author: Taylor, Frank E
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2017
Online Access:http://hdl.handle.net/1721.1/106584
https://orcid.org/0000-0002-7586-7253
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author Taylor, Frank E
author2 Massachusetts Institute of Technology. Department of Physics
author_facet Massachusetts Institute of Technology. Department of Physics
Taylor, Frank E
author_sort Taylor, Frank E
collection MIT
description 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.
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spelling mit-1721.1/1065842022-09-27T20:45:53Z Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector Taylor, Frank E Massachusetts Institute of Technology. Department of Physics Taylor, Frank E 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. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2017-01-23T16:47:34Z 2017-01-23T16:47:34Z 2012-04 2012-01 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/106584 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 https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1140/epjc/s10052-012-1965-6 The European Physical Journal C Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer
spellingShingle Taylor, Frank E
Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title_full Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title_fullStr Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title_full_unstemmed Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title_short Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
title_sort search for decays of stopped long lived particles from 7 tev pp collisions with the atlas detector
url http://hdl.handle.net/1721.1/106584
https://orcid.org/0000-0002-7586-7253
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