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Measurement of the top quark pair production cross section in p anti-p collisions using multijet final states

Baringer, Philip S.
Abbott, B.
Abolins, M.
Abramov, V.
Acharya, B. S.
Adam, I.
Adams, D. L.
Adams, M.
Ahn, S.
Aihara, H.
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Abstract
We have studied tt-bar production using multijet final states in pp-bar collisions at a center-of-mass energy of 1.8 TeV, with an integrated luminosity of 110.3 pb(-1). Each of the top quarks with these final states decays exclusively to a bottom quark and a W boson, with the W bosons decaying into quark-antiquark pairs. The analysis has been optimized using neural networks to achieve the smallest expected fractional uncertainty on the tt-bar production cross section, and yields a cross section of 7.1±2.8 (stat)±1.5 (syst) pb, assuming a top quark mass of 172.1 GeV/c(2). Combining this result with previous DØ measurements, where one or both of the W bosons decay leptonically, gives a tt-bar production cross section of 5.9±1.2 (stat)±1.1 (syst)pb.
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This if the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.60.012001.
Date
1999-05-26
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American Physical Society
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B. Abbott et al. ((DØ Collaboration)). (1999.) "Measurement of the top quark pair production cross section in pp-bar collisions using multijet final states." Physical Review D, 60(1):012001. http://dx.doi.org/10.1103/PhysRevD.60.012001
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