Measurements of the B Production Cross Section in Proton-Antiproton Collisions at √s = 1.96 TeV using semileptonic decays of b hadrons

Abstract

The authors present a measurement of the cross section of b hadron (Hb) production in p$\bar{p}$ collisions at √s = 1.96 TeV using the CDF II detector at the Fermilab Tevatron. They use 83 pb-1 of data taken between october 2002 and May 2003 that was collected with a trigger sensitive to high momentum muons and displaced tracks. They use partially reconstructed decays in the following modes: Hb → μ- $\bar{v}$μD0X, D0 → K-π+, and Hb → μ-$\bar{v}$μD*+ X, D*+ → D0π+, D0 → K- π+, and their charge conjugates. They correct for the backgrounds from c$\bar{c}$ and b$\bar{b}$ decays, for trigger and reconstruction efficiencies, and for detector acceptance. They report the total cross section above a minimum transverse momentum (pT) of 9 GeV/c for the rapidity range |y| ≤ 0.6.