Dilepton p T suppression in the color glass condensate
High Energy Physics Phenomenology Group, GFPAE, Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil
Revised: 19 April 2005
Published online: 8 July 2005
Dilepton production is investigated in proton-nucleus collisions in the forward region using the color glass condensate approach. The transverse momentum distribution (p T), more precisely the ratio between proton-nucleus and proton-proton differential cross section for LHC energies is evaluated, showing the effects of saturation at small p T, and presenting a suppression of the Cronin type peak at moderate p T. These features indicate the dilepton as the most suitable probe to study the properties of the saturated regime and the Cronin effect in these systems.
© Springer-Verlag, 2005