Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at root s=7 TeV
2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 720, no 4-5, 277-308 p.Article in journal (Refereed) Published
A search for long-lived particles is performed using a data sample of 4.7 fb(-1) from proton-proton collisions at a centre-of-mass energy. root s = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and lower limits, at 95% confidence level, are set on the mass of the long-lived particles in different scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. Long-lived staus in gauge-mediated SUSY-breaking models are excluded up to a mass of 300 GeV for tan beta = 5-20. Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. R-hadrons, composites of gluino (stop, sbottom) and light quarks, are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) when using a generic interaction model. Additionally two sets of limits on R-hadrons are obtained that are less sensitive to the interaction model for R-hadrons. One set of limits is obtained using only the inner detector and calorimeter observables, and a second set of limits is obtained based on the inner detector alone.
Place, publisher, year, edition, pages
2013. Vol. 720, no 4-5, 277-308 p.
Long-lived, GMSB, Slepton, R-hadron, ATLAS, LHC
IdentifiersURN: urn:nbn:se:kth:diva-122371DOI: 10.1016/j.physletb.2013.02.015ISI: 000317151500002OAI: oai:DiVA.org:kth-122371DiVA: diva2:622029
FunderSwedish Research Council
QC 20130520. Author count: 29042013-05-202013-05-202013-05-20Bibliographically approved