Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
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
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.
Split Supersymmetry, Colliders
IdentifiersURN: urn:nbn:se:kth:diva-84583DOI: 10.1140/epjc/s10052-012-1965-6ISI: 000304013800011ScopusID: 2-s2.0-84862293232OAI: oai:DiVA.org:kth-84583DiVA: diva2:499370
QC 20120214. Author count: 3052.2012-02-132012-02-132012-06-13Bibliographically approved