Particles, Astrophysics, and Nuclear Physics Seminar

High Density Effects on Quark Production in pA and AA Collisions

François Gelis
Service de Physique Théorique
Saclay, Paris

In this talk, I will discuss some results about the production of pairs of quarks in proton-nucleus and nucleus-nucleus collisions. One major difference compared to proton-proton collisions is the high parton density in a nucleus. Thus, some multiple scattering corrections, enhanced by this large density, turn out to be as important as the leading twist contributions. For pA collisions, an analytic formula for the pair production cross-section has been derived, and I will discuss some of its phenomenological consequences. For AA collisions, I'll show how to reformulate the problem of quark production in a way which is tractable by numerical methods.

Thursday, October 6, 2005
2:00 PM
Gant Science Complex
Materials Science Building
Room IMS20

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