Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at s√=8 TeV

CMS Collaboration; A. M. Sirunyan; A Tumasyan

doi:10.1007/JHEP03(2018)167

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Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at s√=8 TeV

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Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at s√=8 TeV

CMS Collaboration, A. M. Sirunyan and A Tumasyan

Journal of high energy physics : JHEP, Vol.2018, 167

03/27/2018

DOI: 10.1007/JHEP03(2018)167

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https://doi.org/10.1007/JHEP03(2018)167View

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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.

Hadron-Hadron scattering (experiments)

Supersymmetry

Details

Title: Subtitle: Search for natural supersymmetry in events with top quark pairs and photons in pp collisions at s√=8 TeV
Creators: CMS Collaboration (Institution)
A. M. Sirunyan - A. Alikhanyan National Laboratory
A Tumasyan - A. Alikhanyan National Laboratory
Contributors: B. Bilki (Contributor) - University of Iowa
W Clarida (Contributor) - University of Iowa
Kamuran Dilsiz (Contributor) - University of Iowa, Physics and Astronomy
S. Durgut (Contributor) - University of Iowa
R. P. Gandrajula (Contributor) - University of Iowa
M. Haytmyradov (Contributor) - University of Iowa
V Khristenko (Contributor) - University of Iowa
J-P Merlo (Contributor) - University of Iowa
H Mermerkaya (Contributor) - University of Iowa
Alexi Mestvirishvili (Contributor) - University of Iowa, Physics and Astronomy
A. Moeller (Contributor) - University of Iowa
Jane M Nachtman (Contributor) - University of Iowa, Physics and Astronomy
Hasan Ogul (Contributor) - University of Iowa, Physics and Astronomy
Yasar Onel (Contributor) - University of Iowa, Physics and Astronomy
F. Ozok (Contributor) - University of Iowa
Aldo Penzo (Contributor) - University of Iowa, Physics and Astronomy
C. Snyder (Contributor) - University of Iowa
E. Tiras (Contributor) - University of Iowa
James W Wetzel (Contributor) - University of Iowa, Physics and Astronomy
Kai Yi (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Journal of high energy physics : JHEP, Vol.2018, 167
DOI: 10.1007/JHEP03(2018)167
ISSN: 1126-6708
eISSN: 1029-8479
Language: English
Date published: 03/27/2018
Academic Unit: Physics and Astronomy
Record Identifier: 9984440058202771

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