Publications [#287663] of Thomas C. Mehen

Papers Published
  1. Mehen, T, Charm production asymmetries from heavy-quark recombination, Journal of Physics G: Nuclear and Particle Physics, vol. 30 no. 1 (2004), pp. S295-S304(Proceedings of 7th International Conference on Strangeness in Quark Matter (SQM 2003), Atlantic Beach, NC, 12-17 Mar. 2003.) [0306178], [doi] .

    Charm asymmetries in fixed-target hadroproduction experiments are sensitive to power corrections to the QCD factorization theorem for heavy quark production. A power correction called heavy-quark recombination has recently been proposed to explain these asymmetries. In heavy-quark recombination, a light quark or antiquark participates in a hard scattering which produces a charm-anticharm quark pair. The light quark or antiquark emerges from the scattering with small momentum in the rest frame of the charm quark, and together they hadronize into a charm particle. The cross section for this process can be calculated within perturbative QCD up to an overall normalization. Heavy-quark recombination explains the observed D meson and ΛC asymmetries with a minimal set of universal nonperturbative parameters.