Relativistic Heavy Ion Reactions – New Data, Analaysis and ModelsNo Access

BACKWARD RAPIDITY DISTRIBUTIONS IN COLOR DIPOLE MODEL

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

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MARIA BEATRIZ GAY DUCATI

Conjunto Agrotécnico Visconde da Graça, Universidade Federal de Pelotas, Caixa Postal 460, CEP 96060-290, Pelotas, RS, Brazil

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MARCOS ANDRÉ BETEMPS

Conjunto Agrotécnico Visconde da Graça, Universidade Federal de Pelotas, Caixa Postal 460, CEP 96060-290, Pelotas, RS, Brazil

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https://doi.org/10.1142/S0218301307008835Cited by:0 (Source: Crossref)

Abstract

The color dipole model is traditionally applied to forward rapidities. Alternatively, we employ the dipole model to obtain backward rapidity distributions. We have chosen to work with dilepton production in pAu and pp collisions at RHIC and LHC energies. The results are best understood with the help of a nuclear modification factor R_pA as a function of transverse momentum and of rapidity. As it is found, dilepton production at backward rapidities is very dependent on nuclear effects.

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