Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
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1-s2.0-S0370269313005339-main.pdf
Description
Published version
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1.2 MB
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Checksum (MD5)
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Author(s)
Apyan, Aram
Bauer, Gerry P
Busza, Wit
Cali, Ivan Amos
Chan, Michael T.
Dutta, Valentina
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Kim, Y.
Klute, Markus
Date Issued
July 2013
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
Chatrchyan, S. et al. "Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV." Physics Letters B 725, 4-5 (October 2013): 243-270 © 2013 CERN
Version
Final published version
Abstract
A search for supersymmetry is presented based on events with large missing transverse energy, no isolated electron or muon, and at least three jets with one or more identified as a bottom-quark jet. A simultaneous examination is performed of the numbers of events in exclusive bins of the scalar sum of jet transverse momentum values, missing transverse energy, and bottom-quark jet multiplicity. The sample, corresponding to an integrated luminosity of 19.4fb⁻¹, consists of proton-proton collision data recorded at a center-of-mass energy of 8TeV with the CMS detector at the LHC in 2012. The observed numbers of events are found to be consistent with the standard model expectation, which is evaluated with control samples in data. The results are interpreted in the context of two simplified supersymmetric scenarios in which gluino pair production is followed by the decay of each gluino to an undetected lightest supersymmetric particle and either a bottom or top quark-antiquark pair, characteristic of gluino mediated bottom- or top-squark production. Using the production cross section calculated to next-to-leading-order plus next-to-leading-logarithm accuracy, and in the limit of a massless lightest supersymmetric particle, we exclude gluinos with masses below 1170GeV and 1020GeV for the two scenarios, respectively. Keywords: CMS, Physics, SUSY, Hadronic, Btag
MIT Department
Massachusetts Institute of Technology. Department of Physics
Lincoln Laboratory
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2013.06.058
