[Formula Presented] production asymmetries in perturbative [Formula Presented]
This paper explores a new mechanism for B production in which a (Formula presented) quark combines with a light parton from the hard-scattering process before hadronizing into the B hadron. This heavy-quark recombination mechanism can be calculated within perturbative QCD up to a few nonperturbative constants. Though suppressed at large transverse momentum by a factor (Formula presented) relative to (Formula presented) fragmentation production, it can be important at large rapidities. A signature for this heavy-quark recombination mechanism in (Formula presented) colliders is the presence of rapidity asymmetries in B cross sections. Given reasonable assumptions about the size of nonperturbative parameters entering the calculation, we find that the asymmetries are only significant for rapidities larger than those currently probed by collider experiments. © 2002 The American Physical Society.
Braaten, E; Jia, Y; Mehen, T
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