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Title
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Measurement of the production cross section in collisions at =1.96 TeV using soft electron **b**-tagging
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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 a measurement of the top-quark pair-production cross section in pp̅ collisions at √s=1.96 TeV using a data sample corresponding to 1.7 fb-1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt̅ events in the lepton+jets channel, consisting of eν+jets and μν+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (soft electron tags). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51±3 events, corresponding to a cross section of σtt̅ =7.8±2.4(stat)±1.6(syst)±0.5(lumi) pb. We assume a top-quark mass of 175 GeV/c2. This is the first measurement of the tt̅ cross section with soft electron tags in run II of the Tevatron. |
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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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2010
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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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81
:9
(2010)
, p. 092002,1-092002,18
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Article Reference
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092002
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ISI
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000278145100006
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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