Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at √s = 8 TeV
Name
JHEP03(2018)167.pdf
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1.02 MB
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Apyan, Aram
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Date Issued
March 2018
Journal
Journal of High Energy Physics
Publisher
Journal of High Energy Physics
Citation
Sirunyan, A. M. et al. “Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at √s = 8 TeV.” Journal of High Energy Physics 2018, 3 (March 2018): 167 © 2018 The Authors
Version
Final published version
Abstract
Results are presented from a search for natural gauge-mediated supersymmetry (SUSY) in a scenario in which the top squark is the lightest squark, the next-to-lightest SUSY particle is a bino-like neutralino, and the lightest SUSY particle is the gravitino. The strong production of top squark pairs can produce events with pairs of top quarks and neutralinos, with each bino-like neutralino decaying to a photon and a gravitino. The search is performed using a sample of pp collision data accumulated by the CMS experiment at s√=8 TeV, corresponding to an integrated luminosity of 19.7 fb⁻¹. The final state consists of a lepton (electron or muon), jets, and one or two photons. The imbalance in transverse momentum in the events is compared with the expected spectrum from standard model processes. No excess event yield is observed beyond the expected background, and the result is interpreted in the context of a general model of gauge-mediated SUSY breaking that leads to exclusion of top squark masses below 650–730 GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP03(2018)167
