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Measurement of the tt-bar Production Cross Section in pp-bar Collisions at s√=1.96 TeV
Baringer, Philip S. Bean, Alice Hensel, Carsten Moulik, Tania Wilson, Graham Wallace Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M.
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
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Abstract
We measure the tt-bar production cross section in pp-bar 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 σ(tt)-bar=7.62±0.85 pb, assuming the current world average m(t)=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.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.192004.
Date
2008-05-15
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American Physical Society
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V. M. Abazov et al. (D0 Collaboration). (2008). "Measurement of the tt-bar Production Cross Section in pp-bar Collisions at s√=1.96 TeV." Physical Review Letters, 100(19):192004. http://dx.doi.org/10.1103/PhysRevLett.100.192004