Measurement of the tt production cross section in pp collisions at √s=1.96  TeV using soft electron b-tagging

CDF Collaboration

doi:10.1103/PhysRevD.81.092002

Scientific article

English

Measurement of the tt production cross section in pp collisions at √s=1.96 TeV using soft electron b-tagging

Contributors

CDF Collaboration

Collaborators

Clark, Allan Geoffrey; Garcia Navarro, Jose Enrique; Vallecorsa, Sofia; Wu, Xin

Published in

Physical review. D. Particles, fields, gravitation, and cosmology, vol. 81, no. 09, 092002

Publication date

2010

Abstract

We present a measurement of the top-quark pair-production cross section in pp 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 tt 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 σtt=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 tt cross section with soft electron tags in run II of the Tevatron.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Measurement of the tt production cross section in pp collisions at √s=1.96 TeV using soft electron b-tagging. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2010, vol. 81, n° 09, p. 092002. doi: 10.1103/PhysRevD.81.092002

Article (Published version)

Identifiers

PID : unige:38657
DOI : 10.1103/PhysRevD.81.092002

Additional URL for this publication

http://journals.aps.org/prd/abstract/10.1103/PhysRevD.81.092002

Journal ISSN

1550-2368

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168downloads

Creation

14/07/2014 16:50:00

First validation

14/07/2014 16:50:00

Update

13/10/2025 22:32:50

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14/03/2023 21:26:43

Last indexation

10/11/2026 17:01:03