First Measurement Of The B-Jet Cross Section In Events With A W Boson In P(P)Over-Bar Collisions At Root S=1.96 Tev
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Yao,G. P. Yeh, K. Yi, J. Yoh, K. Yorita,T. Yoshida,G. B. Yu, I. Yu,S. S. Yu, J. C. Yun, L. Zanello, A. Zanetti,X. Zhang,Y. Zheng,S. Zucchelli
PHYSICAL REVIEW LETTERS(2010)
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摘要
The cross section for jets from b quarks produced with a W boson has been measured in p (p) over bar collision data from 1: 9 fb(-1) of integrated luminosity recorded by the CDF II detector at the Tevatron. The W + b-jets process poses a significant background in measurements of top quark production and prominent searches for the Higgs boson. We measure a b-jet cross section of 2.74 + 0.27(stat) +/- 0.42(syst) pb in association with a single flavor of leptonic W boson decay over a limited kinematic phase space. This measured result cannot be accommodated in several available theoretical predictions.
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