Dilepton low $p_T$ suppression as an evidence of the Color Glass Condensate

Abstract

The 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 low $p_T$ region, where the saturation effects are expected to increase, is analyzed. The ratio between proton-nucleus and proton-proton differential cross section for RHIC and LHC energies is evaluated, showing the effects of saturation at small $p_T$, and presenting a Cronin type peak at moderate $p_T$. These features indicate the dilepton as a most suitable probe to study the properties of the saturated regime and the Cronin effect.

10 pages, 8 figures, replaced with the version to appear in Physical Review D

Cited by in corpus (16)

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• Cronin effect in the Drell-Yan reaction
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• Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
• Recent results on saturation and CGC