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Phys. Rev. Lett. 100, 192004 (2008) [7 pages]

Measurement of the tt̅ Production Cross Section in pp̅ Collisions at s=1.96  TeV

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V. M. Abazov et al. D0 Collaboration
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Received 19 March 2008; published 15 May 2008

We measure the tt̅ production cross section in pp̅ collisions at s=1.96  TeV in the lepton+jets channel. Two complementary methods discriminate between signal and background: b tagging and a kinematic likelihood discriminant. Based on 0.9  fb-1 of data collected by the D0 detector at the Fermilab Tevatron Collider, we measure σtt̅ =7.62±0.85  pb, assuming the current world average mt=172.6  GeV. We compare our cross section measurement with theory predictions to determine a value for the top-quark mass of 170±7  GeV.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.192004
DOI:
10.1103/PhysRevLett.100.192004
PACS:
13.85.Lg, 13.85.Qk, 14.65.Ha