Production of q bar-q Pairs in Proton-Nucleus Collisions at High Energies

Details Production of q bar-q Pairs in Proton-Nucleus Collisions at High Energies Production of q bar-q Pairs in Proton-Nucleus Collisions at High Energies

2006-03-07

arxiv.org/abs/hep-ph/0603055v2

Phys.Rev. D74 (2006) 054014

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 3 figures; typos corrected, discussion extended

Scientific paper

10.1103/PhysRevD.74.054014

We calculate production of quark-antiquark pairs in high energy proton-nucleus collisions both in the quasi-classical approximation of McLerran-Venugopalan model and including quantum small-$x$ evolution. The resulting production cross section is explicitly expressed in terms of Glauber-Mueller multiple rescatterings in the classical case and in terms of dipole-nucleus scattering amplitude in the quantum evolution case. We generalize the result of one of us (K.T.) beyond the aligned jet configurations. We expand on the earlier results of Blaizot, Gelis and Venugopalan by deriving quark production cross section including quantum evolution corrections in rapidity intervals both between the quarks and the target and between the quarks and the projectile.

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