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Title
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Top quark mass measurement from dilepton events at CDF II with the matrix-element method
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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 describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from pp̅ collisions with √s=1.96 TeV at the Fermilab Tevatron. The likelihood in top quark mass is calculated for each event by convoluting the leading order matrix element describing qq̅ →tt̅ →bℓνℓb̅ ℓ′νℓ′ with detector resolution functions. The presence of background events in the data sample is modeled using similar calculations involving the matrix elements for major background processes. In a data sample with integrated luminosity of 340 pb-1, we observe 33 candidate events and measure Mtop=165.2±6.1(stat.)±3.4(syst.) GeV/c2. This measurement represents the first application of this method to events with two charged leptons and is the most precise single measurement of the top quark mass in this 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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2006
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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.74.032009
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Volume/pages
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74
:3
(2006)
, p. 032009,1-032009,20
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ISI
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000240239300020
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Full text (Publisher's DOI)
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Full text (open access)
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