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

M. A. Betemps (1); M. B. Gay Ducati (1) ((1) Instituto de Fisica - Universidade Federal do Rio Grande do Sul)

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

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arxiv hep-ph/0408097 v2 pith:MXFLABEG submitted 2004-08-06 hep-ph hep-exnucl-th

M. A. Betemps (1) , M. B. Gay Ducati (1) ((1) Instituto de Fisica - Universidade Federal do Rio Grande do Sul) This is my paper · ORCID

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keywords dileptoncolorcondensatecronineffectsglassproton-nucleusregion

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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.

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