We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tt̅ decays using the data sample corresponding to an integrated luminosity of 5.6  fb-1 of pp̅ collisions at Tevatron with √s=1.96  TeV, collected with the CDF II detector. We construct templates of two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decays in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop=172.1±1.1(stat)±0.9(syst)  GeV/c2.

Top quark mass measurement using the template method at CDF

PAGLIARONE, Carmine Elvezio;
2011

Abstract

We present a measurement of the top quark mass in the lepton+jets and dilepton channels of tt̅ decays using the data sample corresponding to an integrated luminosity of 5.6  fb-1 of pp̅ collisions at Tevatron with √s=1.96  TeV, collected with the CDF II detector. We construct templates of two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decays in the lepton+jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton+jets and dilepton channels to the data yields a measured top quark mass of Mtop=172.1±1.1(stat)±0.9(syst)  GeV/c2.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11580/19488
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