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Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 4, 1965- p.Article in journal (Refereed) Published
Abstract [en]

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(-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(-5) to 10(3) seconds and a neutralino mass of 100 GeV.

Place, publisher, year, edition, pages
2012. Vol. 72, no 4, 1965- p.
Keyword [en]
Split Supersymmetry, Colliders
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-84583DOI: 10.1140/epjc/s10052-012-1965-6ISI: 000304013800011ScopusID: 2-s2.0-84862293232OAI: diva2:499370
QC 20120214. Author count: 3052.Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-06-13Bibliographically approved

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Lafaye, RemiLund-Jensen, BengtStrandberg, Jonas
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Particle and Astroparticle Physics
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