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Search for Top Squark and Higgsino Production Using Diphoton Higgs Boson Decays

Author(s)
Apyan, Aram; Barbieri, Riccardo; Bauer, Gerry P.; Busza, Wit; Cali, Ivan Amos; Chan, M.; Di Matteo, Leonardo; Dutta, V.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Gulhan, Doga Can; Klute, Markus; Lai, Yue Shi; Lee, Y.-J.; Levin, A.; Luckey, P. David, Jr.; Ma, Teng; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E.; Roland, Gunther M.; Stephans, George S. F.; Stockli, Fabian; Sumorok, Konstanty C.; Velicanu, Dragos Alexandru; Veverka, Jan; Wyslouch, Boleslaw; Yang, M.; Yoon, A. S.; Zanetti, Marco; Zhukova, Victoria; ... Show more Show less
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Abstract
Results are presented of a search for a “natural” supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top quark (the top squark) and the Higgs boson (Higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7  fb[superscript −1] of proton-proton collision data at √s = 8  TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the top squark mass below 360 to 410 GeV, depending on the Higgsino mass.
Date issued
2014-04
URI
http://hdl.handle.net/1721.1/88727
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Search for Top Squark and Higgsino Production Using Diphoton Higgs Boson Decays.” Physical Review Letters 112, no. 16 (April 2014). © 2014 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114

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