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Measurement of the ttbar production cross section in ppbar collisions at sqrt{s} = 1.96 TeV

Research output: Contribution to journalJournal article

Published

???articleNumber???192004
Journal publication date15/05/2008
JournalPhysical Review Letters
Journal number19
Volume100
Number of pages7
Original languageEnglish

Abstract

We measure the ttbar production cross section in ppbar collisions at sqrt{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 sigma_ttbar=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.

Bibliographic note

© 2008 The American Physical Society 7 pages, 3 figures, 5 tables, submitted to Physical Review Letters