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Published December 2012 | Published + Submitted
Journal Article Open

Measurement of the top-quark mass in tt events with lepton+jets final states in pp collisions at √s=7 TeV

Abstract

The mass of the top quark is measured using a sample of tt candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at √s=7 TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 fb^(−1). For each event the mass is reconstructed from a kinematic fit of the decay products to a tt hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in qq decays, to be 173.49 ± 0.43 (stat.+JES)±0.98 (syst.) GeV.

Additional Information

© 2012 CERN for the benefit of the CMS collaboration. Received: September 11, 2012. Revised: November 2, 2012. Accepted: November 4, 2012. Published: December 19, 2012. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEP, IPST and NECTEC (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.).

Attached Files

Published - CMS_JHEP2012p105.pdf

Submitted - 1209.2319v1.pdf

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Additional details

Created:
August 19, 2023
Modified:
October 23, 2023