Compact Muon Solenoid
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| CMS-TOP-11-027 ; CERN-PH-EP-2013-059 | ||
| Measurement of masses in the tˉt system by kinematic endpoints in pp collisions at √s = 7 TeV | ||
| CMS Collaboration | ||
| 21 April 2013 | ||
| Eur. Phys. J. C 73 (2013) 2494 | ||
| Abstract: A simultaneous measurement of the top-quark, W-boson, and neutrino masses is reported for tˉt events selected in the dilepton final state from a data sample corresponding to an integrated luminosity of 5.0 inverse femtobarns collected by the CMS experiment in pp collisions at √s=7 TeV. The analysis is based on endpoint determinations in kinematic distributions. When the neutrino and W-boson masses are constrained to their world-average values, a top-quark mass value of Mt=173.9±0.9(stat.)+1.7−2.1 (syst.) GeV is obtained. When such constraints are not used, the three particle masses are obtained in a simultaneous fit. In this unconstrained mode the study serves as a test of mass determination methods that may be used in beyond standard model physics scenarios where several masses in a decay chain may be unknown and undetected particles lead to underconstrained kinematics. | ||
| Links: e-print arXiv:1304.5783 [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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