%0 Journal Article
%T Confronting color dipole and intrinsic kT approaches in D-Y dilepton production
%A Betemps
%A Marcos Andr¨¦
%A Gay Ducati
%A Maria Beatriz
%A Oliveira
%A Emmanuel Gr£¿ve de
%J Brazilian Journal of Physics
%D 2008
%I Scientific Electronic Library Online
%R 10.1590/S0103-97332008000400030
%X we study the drell-yan dilepton production in proton-nucleus collisions at rhic energies. we use two different approaches: the usual intrinsic transverse momentum approach at nlo in the infinitum momentum frame; and the color dipole in the target rest frame. we compare both formalisms at backward rapidities (proton as a target). at forward rapidities, we use earlier results considering the nucleus in a color glass condensate phase. we show qualitative agreement between the two formalisms through the nuclear modification ratio as a function of both rapidity and transverse momentum and that low-mass dileptons are relevant observables to probe nuclear effects.
%K drell-yan process
%K dilepton production
%K nuclear effects
%K dipole frame
%K infinite momentum frame.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-97332008000400030&lng=en&nrm=iso&tlng=en