Measurement of the top-quark mass in $$ \mathrm{t}\overline{\mathrm{t}} $$ events with lepton+jets final states in pp collisions at $$ \sqrt{s}=7 $$ TeV
Journal Article
·
· Journal of High Energy Physics (Online)
The mass of the top quark is measured using a sample of t t-bar candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at sqrt(s) = 7 TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 inverse femtobarns. For each event the mass is reconstructed from a kinematic fit of the decay products to a t t-bar hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in q anti-q decays, to be 173.49 +/- 0.43 (stat.+JES) +/- 0.98 (syst.) GeV.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- The CMS collaboration
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1406537
- Report Number(s):
- FERMILAB-PUB-12-752-CMS; CMS-TOP-11-015; CERN-PH-EP-2012-250; arXiv:1209.2319; 1185101
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2012, Issue 12; ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
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