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

Authors

The CMS Collaboration
S. Chatrchyan, Yerevan Physics Institute
V. Khachatryan, Yerevan Physics Institute
Marc M. Baarmand, Florida Institute of Technology
B. Dorney, Florida Institute of Technology
Marcus Hohlmann, Florida Institute of Technology
Himali Kalakhety, Florida Institute of Technology
Igor Vodopiyanov, Florida Institute of Technology

Document Type

Article

Publication Title

Journal of High Energy Physics

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 nal state, collected by CMS in pp collisions at p s = 7TeV 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 t of the decay products to a tt hypothesis. The topquark 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.

DOI

doi.org/10.1007/JHEP12(2012)105

Publication Date

2012

Recommended Citation

The CMS collaboration., Chatrchyan, S., Khachatryan, V. et al. Measurement of the top-quark mass in tt¯ events with lepton+jets final states in pp collisions at s√=7 TeV. J. High Energ. Phys. 2012, 105 (2012). https://doi.org/10.1007/JHEP12(2012)105