Measurement of the top-quark mass from the b jet energy spectrum

CMS Physics Analysis Summaries
Report number	CMS-PAS-TOP-15-002
Title	Measurement of the top-quark mass from the b jet energy spectrum
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	The top-quark mass is measured using the peak position of the energy distribution of b jets produced from top-quark decays. The analysis is based on a recent theoretical proposal. The measurement is carried out selecting $\mathrm{t\overline{t}}$ events with one electron and one muon in the final state in proton-proton collision data at $\sqrt{s}=8~\mathrm{TeV}$, corresponding to an integrated luminosity of 19.7$~\mathrm{fb}^{-1}$. The fitted peak position of the observed energy distribution is calibrated using simulated events and translated to a top-quark mass measurement using relativistic kinematics, with the result $m_{\mathrm{t}}=172.29\pm1.17\,(\mathrm{stat.})\pm2.66\,(\mathrm{syst.})~\mathrm{GeV}$.
Other source	Inspire
Email contact: [email protected] Fulltext in PDF Figure_003-a Figure_003-c Figure_003-b Figure_006 Figure_005-b Figure_005-a Figure_004 Figure_002 Figure_001 Additional information for the analysis (restricted access)