Measurement of the top-quark mass in all-jets tt̄ events in pp collisions at √s = 7 TeV


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Chatrchyan S., Khachatryan V., Sirunyan A., Tumasyan A., Adam W., Bergauer T., ...Daha Fazla

European Physical Journal C, cilt.74, sa.4, ss.1-23, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 74 Sayı: 4
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1140/epjc/s10052-014-2758-x
  • Dergi Adı: European Physical Journal C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-23
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The mass of the top quark is measured using a sample of tt̄ candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at √s = 7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 fb-1. The mass is reconstructed for each event employing a kinematic fit of the jets to a tt̄ hypothesis. The top-quark mass is measured to be 173.49±0.69(stat.)±1.21(syst.) GeV. A combination with previously published measurements in other decay modes by CMS yields a mass of 173.54±0.33(stat.)±0.96(syst.) GeV. © 2014 CERN for the benefit of the CMS collaboration.