Measurement of the t t-bar production cross section and the top quark mass in the dilepton channel in pp collisions at sqrt(s) =7 TeV
The t{bar t} production cross section and top quark mass are measured in proton-proton collisions at {radical}s = 7 TeV in a data sample corresponding to an integrated luminosity of 36 pb{sup -1} collected by the CMS experiment. The measurements are performed in events with two leptons (electrons or muons) in the final state. Results of the cross section measurement in events with and without b-quark identification are obtained and combined. The measured value is {sigma}{sub t{bar t}} = 168 {+-} 18 (stat.) {+-} 14 (syst.) {+-} 7 (lumi.) pb, consistent with predictions from the standard model. The top quark mass m{sub top} is reconstructed with two different methods, a full kinematic analysis and a matrix weighting technique. The combination yields a measurement of m{sub top} = 175.5 {+-} 4.6 (stat.) {+-} 4.6 (syst.) GeV/c{sup 2}.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1020308
- Report Number(s):
- FERMILAB-PUB-11-309-E; arXiv eprint number arXiv:1105.5661; TRN: US1103721
- Journal Information:
- JHEP 1107:049,2011, Vol. 2011, Issue 7; ISSN 1029-8479
- Country of Publication:
- United States
- Language:
- English
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