The Leading Particle Effect from Heavy-Quark Recombination
High Energy Physics - Phenomenology
2014-11-17 v1
Abstract
The leading particle effect in charm hadroproduction is an enhancement of the cross section for a charmed hadron D in the forward direction of the beam when the beam hadron has a valence parton in common with the D. The large D+/D- asymmetry observed by the E791 experiment is an example of this phenomenon. We show that the heavy-quark recombination mechanism provides an economical explanation for this effect. In particular, the D+/D- asymmetry can be fit reasonably well using a single parameter whose value is consistent with a recent determination from charm photoproduction.
Keywords
Cite
@article{arxiv.hep-ph/0205149,
title = {The Leading Particle Effect from Heavy-Quark Recombination},
author = {Eric Braaten and Yu Jia and Thomas Mehen},
journal= {arXiv preprint arXiv:hep-ph/0205149},
year = {2014}
}
Comments
Revtex file, 4 pages, 3 figures