Abstract
8 páginas, 2 figuras.-- CDF Collaboration: et al.
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.
We thank the Fermilab sta and the technical sta s of
the participating institutions for their vital contributions.
This work was supported by the U.S. Department of Energy
and National Science Foundation; the Italian Istituto
Nazionale di Fisica Nucleare; the Ministry of Education,
Culture, Sports, Science and Technology of Japan;
the Natural Sciences and Engineering Research Council
of Canada; the National Science Council of the Republic
of China; the Swiss National Science Foundation; the
A.P. Sloan Foundation; the Bundesministerium für Bildung
und Forschung, Germany; the Korean Science and
Engineering Foundation and the Korean Research Foundation;
the Science and Technology Facilities Council and
the Royal Society, UK; the Institut National de Physique
Nucleaire et Physique des Particules/CNRS; the Russian
Foundation for Basic Research; the Ministerio de Educación y Ciencia and Programa Consolider-Ingenio 2010,
Spain; the Slovak R&D Agency; and the Academy of
Finland.
Peer reviewed