We report a measurement of the production cross section for b
hadrons in p anti-p collisions at s**(1/2) ñ.96 TeV. Using a data sample
derived from an integrated luminosity 83 pb-1 collected with the upgraded
Collider Detector (CDF II) at the Fermilab Tevatron, we analyze b hadrons,
H_b, partially reconstructed in the semileptonic decay mode H_b -->
mu-D0 X. Our measurement of the inclusive production cross section for
b hadrons with transverse momentum p(t) > 9 GeV/c and rapi+dity |y|
< 0.6 is sigma 1.30 mu b +/- 0.05 pb (stat) +/- 0.14 mu b (syst) +/-
0.07 mu b(B), where the uncertainities are statistical, systematic,
and from branching fractions respectively. The differential cross
sections d sigma/dp(t) are found to be in good agreement with recent
measurements of the H_b cross section and well described by fixed-order
next-to-leading logarithm predictions.
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Updated: Friday, 2009 May 29 13:57:22 CDT automatically from input from carol picciolo