Search for single production of scalar leptoquarks in proton-proton collisions at s =8 TeV


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Khachatryan V., Sirunyan A., Tumasyan A., Adam W., Asilar E., Bergauer T., ...Daha Fazla

Physical Review D, cilt.93, sa.3, 2016 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 93 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1103/physrevd.93.032005
  • Dergi Adı: Physical Review D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Erzincan Binali Yıldırım Üniversitesi Adresli: Evet

Özet

© 2016 CERN.A search is presented for the production of both first- and second-generation scalar leptoquarks with a final state of either two electrons and one jet or two muons and one jet. The search is based on a data sample of proton-proton collisions at center-of-mass energy s=8 TeV recorded with the CMS detector and corresponding to an integrated luminosity of 19.6 fb-1. Upper limits are set on both the first- and second-generation leptoquark production cross sections as functions of the leptoquark mass and the leptoquark couplings to a lepton and a quark. Results are compared with theoretical predictions to obtain lower limits on the leptoquark mass. At 95% confidence level, single production of first-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 1730 GeV, and second-generation leptoquarks with a coupling and branching fraction of 1.0 is excluded for masses below 530 GeV. These are the best overall limits on the production of first-generation leptoquarks to date.