Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at √s = 8 TeV
Name
PhysRevD.91.052018.pdf
Size
1.42 MB
Format
Adobe PDF
Checksum (MD5)
19e68d157f94553497b5ca6ee6951e66
Author(s)
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Erö, J.
Friedl, M.
Frühwirth, R.
Ghete, V. M.
Date Issued
March 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Khachatryan, V., et al. "Search for supersymmetry using razor variables in events with b-tagged jets in pp collisions at √s = 8 TeV." Phys. Rev. D 91, 052018 (March 2015). © 2015 CERN, for the CMS Collaboration
Version
Final published version
Abstract
An inclusive search for supersymmetry in events with at least one b-tagged jet is performed using proton-proton collision data collected by the CMS experiment in 2012 at a center-of-mass energy of 8 TeV. The data set size corresponds to an integrated luminosity of 19.3 fb[superscript −1]. The two-dimensional distribution of the razor variables R[superscript 2] and M[subscript R] is studied in events with and without leptons. The data are found to be consistent with the expected background, which is modeled with an empirical function. Exclusion limits on supersymmetric particle masses at a 95% confidence level are derived in several simplified supersymmetric scenarios for several choices of the branching fractions. By combining the likelihoods of a search in events without leptons and a search that requires a single lepton (electron or muon), an improved bound on the top-squark mass is obtained. Assuming the lightest supersymmetric particle to be stable and weakly interacting, and to have a mass of 100 GeV, the branching-fraction-dependent (-independent) production of gluinos is excluded for gluino masses up to 1310 (1175) GeV. The corresponding limit for top-squark pair production is 730 (645) GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.91.052018
