出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:We report the rst observation of single top production in p ¯ p collisions made by the CDF and D0 collaborations at the Tevatron Collider and the measurement of the inclusive single top cross section in the s and t channels. Both collaborations measured a single top production cross section consistent with the standard model prediction, with a 5.0 s signicance, and performed the rst direct measurement of the CKM matrix element jVtbj. A Bayesian analysis is used to combine CDF and D0 results and to extract the cross section from the distributions of multivariate discriminants provided by the two collaborations. For a top mass of 170 GeV/c2, a Tevatron combined single top cross section of 2.76 +0:58 0:47 is measured. A rst attempt to measure the s and t channels cross sections separately is described. The single top candidates sample is used for the rst time to measure top properties.