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Title
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Precision measurement of the top-quark mass from dilepton events at CDF II
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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| We report a measurement of the top-quark mass, Mt, in the dilepton decay channel of tt̅ →bℓ′+νℓ′b̅ ℓ-ν̅ ℓ using an integrated luminosity of 1.0 fb-1 of pp̅ 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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Language
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English
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Source (journal)
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Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
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Publication
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Ridge, N.Y.
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American Physical Society
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2007
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ISSN
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1550-7998
[print]
1550-2368
[online]
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DOI
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10.1103/PHYSREVD.75.031105
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Volume/pages
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75
:3
(2007)
, p. 031105,1-031105,7
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ISI
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000244534800005
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Full text (Publisher's DOI)
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Full text (open access)
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