Angular Dependence of the Nuclear Enhancement of Drell-Yan Pairs
- 22 November 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (21) , 4261-4264
- https://doi.org/10.1103/physrevlett.83.4261
Abstract
We calculate the nuclear enhancement in the angular distribution of Drell-Yan pairs produced in proton-nucleus reactions. Nuclear effects are encoded in universal twist-4 parton correlation functions. We find that the Lam-Tung relation for the angular coefficients of the lepton-pair distribution holds for the double-hard, but not for the soft-hard, contribution. We also predict that nuclear enhancement effects at the Relativistic Heavy Ion Collider energies can be large.Keywords
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This publication has 20 references indexed in Scilit:
- Bremsstrahlung of a quark propagating through a nucleusPhysical Review C, 1999
- Jet broadening in deeply inelastic scatteringPhysical Review D, 1998
- Nuclear dependence in the Drell-Yan transverse momentum distributionPhysical Review D, 1998
- Nuclear dependence in direct photon productionPhysical Review D, 1996
- Global QCD analysis and the CTEQ parton distributionsPhysical Review D, 1995
- Anomalous nuclear enhancement in deeply inelastic scattering and photoproductionPhysical Review D, 1994
- Twist-4 nuclear parton distributions from photoproductionPhysical Review D, 1994
- Adependence of photoproduced dijetsPhysical Review Letters, 1994
- Effects of initial-state QCD interactions in the Drell-Yan processPhysical Review D, 1989
- Systematic approach to inclusive lepton pair production in hadronic collisionsPhysical Review D, 1978