Compact Muon Solenoid
LHC, CERN
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| CMS-TOP-11-016 ; CERN-PH-EP-2012-222 | ||
| Measurement of the top-quark mass in $ \mathrm{ t \bar{t} } $ events with dilepton final states in pp collisions at $\sqrt{s}$ = 7 TeV | ||
| CMS Collaboration | ||
| 12 September 2012 | ||
| Eur. Phys. J. C 72 (2012) 2202 | ||
| Abstract: The top-quark mass is measured in proton-proton collisions at $\sqrt{s}$ = 7 TeV using a data sample corresponding to an integrated luminosity of 5.0 inverse femtobarns collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel $t\bar{t}$ to ell+ nu[ell] b, ell- anti-nu[ell] b-bar, where ell=e,$\mu$. Candidate top-quark decays are selected by requiring two leptons, at least two jets, and imbalance in transverse momentum. The mass is reconstructed with an analytical matrix weighting technique using distributions derived from simulated samples. Using a maximum-likelihood fit, the top-quark mass is determined to be 172.5 +/- 0.4 (stat) +/- 1.5 (syst) GeV. | ||
| Links: e-print arXiv:1209.2393 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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