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Title
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Measurement of the top quark mass using the invariant mass of lepton pairs in soft muon **b**-tagged events
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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 present the first measurement of the mass of the top quark in a sample of tt̅ →ℓν̅ bb̅ qq̅ events (where ℓ=e,μ) selected by identifying jets containing a muon candidate from the semileptonic decay of heavy-flavor hadrons (soft muon b tagging). The pp̅ collision data used correspond to an integrated luminosity of 2 fb-1 and were collected by the CDF II detector at the Fermilab Tevatron Collider. The measurement is based on a novel technique exploiting the invariant mass of a subset of the decay particles, specifically the lepton from the W boson of the t→Wb decay and the muon from a semileptonic b decay. We fit template histograms, derived from simulation of tt̅ events and a modeling of the background, to the mass distribution observed in the data and measure a top quark mass of 180.5±12.0(stat)±3.6(syst) GeV/c2, consistent with the current world average value. |
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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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2009
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ISSN
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1550-7998
[print]
1550-2368
[online]
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Volume/pages
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80
:5
(2009)
, p. 051104,1-051104,9
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ISI
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000270384900004
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Full text (Publisher's DOI)
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Full text (open access)
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