Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at √s=8 TeV
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 pair...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/67191/ http://irep.iium.edu.my/67191/ http://irep.iium.edu.my/67191/ http://irep.iium.edu.my/67191/1/67191_Search%20for%20natural%20supersymmetry%20in%20events_article.pdf http://irep.iium.edu.my/67191/2/67191_Search%20for%20natural%20supersymmetry%20in%20events_scopus.pdf http://irep.iium.edu.my/67191/13/67191%20Search%20for%20natural%20supersymmetry%20in%20events%20with%20top%20quark%20pairs%20and%20photons%20in%20pp%20collisions%20at%20%E2%88%9As%3D8%20TeV_wos.pdf |
| Summary: | 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. |
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