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Search for direct production of supersymmetric partners of the top quark in the all-jets final state in proton-proton collisions at √s=13 TeV

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info:eu-repo/semantics/openAccess

Date

2017-10

Author

CMS Collaboration
Karapınar, Güler

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Citation

Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer,T., Brandstetter, J.,...CMS Collaboration (2017). Search for direct production of supersymmetric partners of the top quark in the all-jets final state in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2017(10). doi:10.1007/JHEP10(2017)005

Abstract

A search for direct production of top squark pairs in events with jets and large transverse momentum imbalance is presented. The data are based on proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector in 2016 at the CERN LHC, and correspond to an integrated luminosity of 35.9 fb−1. The search considers a variety of R-parity conserving supersymmetric models, including ones for which the top squark and neutralino masses are nearly degenerate. Specialized jet reconstruction tools are developed to exploit the unique characteristics of the signal topologies. With no significant excess of events observed above the standard model expectations, upper limits are set on the direct top squark pair production cross section in the context of simplified supersymmetric models for various decay hypotheses. Models with larger differences in mass between the top squark and neutralino are probed for masses up to 1040 and 500 GeV, respectively, whereas models with a more compressed mass hierarchy are probed up to 660 and 610 GeV, respectively. The smallest mass difference probed is for masses near to 550 and 540 GeV, respectively.

Source

Journal of High Energy Physics

Volume

2017

Issue

10

URI

http://doi.org/10.1007/JHEP10(2017)005
http://hdl.handle.net/11147/6714

Collections

  • Mathematics / Matematik [649]
  • Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection [4235]
  • WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection [4079]



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