Publications [#247597] of Berndt Mueller

Papers Published
  1. Fries, RJ; Müller, B; Schäfer, A; Stein, E, Angular Dependence of the Nuclear Enhancement of Drell-Yan Pairs, Physical Review Letters, vol. 83 no. 21 (November, 1999), pp. 4261-4264 [pdf], [doi] .

    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.