Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The color dipole approach to the Drell-Yan process in pA collisions   In the target rest frame and at high energies, Drell-Yan (DY) dilepton
production looks like bremsstrahlung of massive photons, rather than parton
annihilation. The projectile quark is decomposed into a series of Fock states.
Configurations with fixed transverse separations are interaction eigenstates
for pp scattering. The DY cross section can then be expressed in terms of the
same color dipole cross section as DIS. This approach is especially suitable to
describe nuclear effects, since it allows to apply Glauber multiple scattering
theory. We go beyond the Glauber eikonal approximation by taking into account
transitions between interaction eigenstates. We calculate nuclear shadowing at
large Feynman-x_F for DY in proton-nucleus collisions, compare to existing data
from E772 and make predictions for RHIC. Nuclear effects on the transverse
momentum distribution are also investigated.

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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
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The categories of this paper are: quant-ph
2
The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph