Kopeliovich, B. Z. and Raufeisen, J. and Tarasov, A. V. and Johnson, M. B. (2003) Nuclear effects in the Drell-Yan process at very high energies. PHYSICAL REVIEW C, 67 (1): 014903. ISSN 0556-2813
Full text not available from this repository.Abstract
We study Drell-Yan (DY) dilepton production in proton(deuterium)-nucleus and in nucleus-nucleus collisions within the light-cone color-dipole formalism. This approach is especially suitable for predicting nuclear effects in the DY cross section for heavy-ion collisions, as it provides the impact parameter dependence of nuclear shadowing and transverse momentum broadening, quantities that are not available from the standard parton model. For p(D) + A collisions we calculate nuclear shadowing and investigate nuclear modification of the DY transverse momentum distribution at the Relativistic Heavy Ion Collider and the Large Hadron Collider for kinematics corresponding to coherence length much longer than the nuclear size. Calculations are performed separately for transversely and longitudinally polarized DY photons, and predictions are presented for the dilepton angular distribution. Furthermore, we calculate nuclear broadening of the mean transverse momentum squared of DY dileptons as function of the nuclear mass number and energy. We also predict nuclear effects for the cross section of the DY process in heavy-ion collisions. We found a substantial nuclear shadowing for valence quarks, stronger than for the sea.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LEPTON-PAIR PRODUCTION; GLUON DISTRIBUTION-FUNCTIONS; DEEP-INELASTIC SCATTERING; PARTON DISTRIBUTIONS; TRANSVERSE-MOMENTUM; SMALL-X; HADRONIC COLLISIONS; QCD; DEPENDENCE; SATURATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Aug 2021 10:34 |
| Last Modified: | 26 Aug 2021 10:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/39529 |
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