期刊
PHYSICAL REVIEW D
卷 75, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.75.031105
关键词
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资金
- STFC [PP/E000452/1] Funding Source: UKRI
- Science and Technology Facilities Council [PPA/A/S/2003/00461/2, PP/E000444/1, PP/E000452/1] Funding Source: researchfish
We report a measurement of the top-quark mass, M-t, in the dilepton decay channel of tt -> bl'(+) v(l')bl(l)(-v) 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 M-t = 164.5 +/- 3.9 (stat.) +/- 3.9 (syst.) GeV/c(2), the most precise measurement of Mt in the dilepton channel.
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