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The Leading Particle Effect from Heavy-Quark Recombination | | Eric Braaten
; Yu Jia
; Thomas Mehen
; | | Date: |
14 May 2002 | | Journal: | Phys.Rev.Lett. 89 (2002) 122002 | | Subject: | hep-ph | | Affiliation: | Ohio State U.), Thomas Mehen (Duke U. | | 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. | | Source: | arXiv, hep-ph/0205149 | | Services: | Forum | Review | PDF | Favorites | |
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