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Precision measurement of the top-quark mass from dilepton events at CDF II

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / Donega, Mauro / Moed, Shulamit / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review. D. 2007, vol. 75, no. 03, p. 031105
Abstract We report a measurement of the top-quark mass, Mt, in the dilepton decay channel of tt→bℓ'+νℓ′b¯ℓ−ν¯ℓ using an integrated luminosity of 1.0  fb−1 of pp collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of Mt=164.5±3.9(stat.)±3.9(syst.)  GeV/c2, the most precise measurement of Mt in the dilepton channel.
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CDF COLLABORATION. Precision measurement of the top-quark mass from dilepton events at CDF II. In: Physical Review. D, 2007, vol. 75, n° 03, p. 031105. doi: 10.1103/PhysRevD.75.031105 https://archive-ouverte.unige.ch/unige:38429

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Deposited on : 2014-07-03

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