Measurement of the p(p)over-bar -> W plus b plus X production cross section at root s=1.96 TeV D0 Collaboration
Abstrakt
We present a measurement of the cross section for W boson production in association with at least one b-quark jet in proton-antiproton collisions. The measurement is made using data corresponding to an integrated luminosity of 6.1 fb(-1) recorded with the DO detector at the Fermilab Tevatron p (p) over bar Collider at root s = 1.96 TeV.
We measure an inclusive cross section of sigma(W(-> mu nu) + b + X) = 1.04 +/- 0.05 (stat.) +/- 0.12 (syst.) pb and sigma(W (-> e nu) + b + X) = 1.00 +/- 0.04 (stat.) +/- 0.12 (syst.) pb in the phase space defined by p(T)(nu) > 25 GeV, p(T)(b-jet) > 20 GeV, vertical bar eta(b-jet)vertical bar 20 GeV and vertical bar eta(mu)vertical bar l nu) + b + X) = 1.05 +/- 0.12 (stat. + syst.) pb for vertical bar eta(l)vertical bar l nu) = 1.34(-0.34)(+0.41) (syst.) pb, and also with predictions from the SHERPA and MADGRAPH Monte Carlo event generators. Published by Elsevier B.V.