arXiv:hep-ph/0304280·v1·High Energy Physics — Phenomenology
Lambda_c^+/Lambda_c^- Asymmetry in Hadroproduction from Heavy-Quark Recombination
Eric Braaten · Masaoki Kusunoki (Ohio State U.) Yu Jia (Michigan State U.) Thomas Mehen (Duke U. & Jefferson Lab)
Abstract
Asymmetries in the hadroproduction of charm particles directly probe power corrections to the QCD factorization theorems. In this paper, the heavy-quark recombination mechanism, a power correction that explains charm meson asymmetries, is extended to charm baryons. In this mechanism, a light quark participates in the hard scattering that creates a charm quark and they hadronize together into a charm baryon. This provides a natural and economical explanation for the \Lambda_c^+/\Lambda_c^- asymmetries measured in \pi N and p N collisions.
Comments: 4 pages, 3 figures