dc.contributor.author CMS CollaborationAdair, A.Boulahouache, C.Ecklund, K.M.Geurts, F.J.M.Padley, B.P.Redjimi, R.Roberts, J.Zabel, J. 2015-07-15T12:52:25Z 2015-07-15T12:52:25Z 2012 CMS Collaboration, Adair, A., Boulahouache, C., et al.. "Search for stopped long-lived particles produced in pp collisions at √s=7 TeV." Journal of High Energy Physics, 2012, no. 26 (2012) Springer: http://dx.doi.org/10.1007/JHEP08(2012)026. https://hdl.handle.net/1911/81016 A search has been performed for long-lived particles that have stopped in the CMS detector, during 7 TeV proton-proton operations of the CERN LHC. The existence of such particles could be inferred from observation of their decays when there were no proton-proton collisions in the CMS detector, namely during gaps between LHC beam crossings. Using a data set in which CMS recorded an integrated luminosity of 4.0 fb−1, and a search interval corresponding to 246 hours of trigger live time, 12 events are observed, with a mean background prediction of 8.6 ± 2.4 events. Limits are presented at 95% confidence level on long-lived gluino and stop production, over 13 orders of magnitude of particle lifetime. Assuming the “cloud model” of R-hadron interactions, a gluino with mass below 640 GeV and a stop with mass below 340 GeV are excluded, for lifetimes between 10 μs and 1000 s. eng Springer JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0 http://creativecommons.org/licenses/by/4.0/ Search for stopped long-lived particles produced in pp collisions at √s=7 TeV Journal article Journal of High Energy Physics Hadron-Hadron Scattering 2012 26 Text http://dx.doi.org/10.1007/JHEP08(2012)026 publisher version
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