Search for Physics Beyond the Standard Model in Events with Two Leptons of Same Sign, Missing Transverse Momentum, and Jets in Proton–proton Collisions at √s = 13
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Date Issued
July 2017
Journal
European Physical Journal C: Particles and Fields
Publisher
Springer-Verlag
Citation
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, E. Asilar, T. Bergauer, et al. “Search for Physics Beyond the Standard Model in Events with Two Leptons of Same Sign, Missing Transverse Momentum, and Jets in Proton–proton Collisions at √s = 13.” The European Physical Journal C: Particles and Fields 77, 9 (September 2017): 578 © 2017 CERN for the benefit of the CMS collaboration
Version
Final published version
Abstract
A data sample of events from proton–proton collisions with two isolated same-sign leptons, missing transverse momentum, and jets is studied in a search for signatures of new physics phenomena by the CMS Collaboration at the LHC. The data correspond to an integrated luminosity of 35.9 fb⁻¹, and a center-of-mass energy of 13 TeV . The properties of the events are consistent with expectations from standard model processes, and no excess yield is observed. Exclusion limits at 95% confidence level are set on cross sections for the pair production of gluinos, squarks, and same-sign top quarks, as well as top-quark associated production of a heavy scalar or pseudoscalar boson decaying to top quarks, and on the standard model production of events with four top quarks. The observed lower mass limits are as high as 1500 GeV for gluinos, 830 GeV for bottom squarks. The excluded mass range for heavy (pseudo)scalar bosons is 350–360 (350–410) GeV . Additionally, model-independent limits in several topological regions are provided, allowing for further interpretations of the results.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-017-5079-z
