Particle production azimuthal asymmetries in a clustering of color sources model

doi:10.1088/0954-3899/37/1/015103

Particle production azimuthal asymmetries in a clustering of color sources model

I Bautista et al 2010 J. Phys. G: Nucl. Part. Phys. 37 015103 (15pp) doi: 10.1088/0954-3899/37/1/015103

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I Bautista¹, L Cunqueiro^1,2, J Dias de Deus^1,3 and C Pajares¹
¹ IGFAE and Departamento de Física de Partículas, Univ. of Santiago de Compostela, 15782, Santiago de Compostela, Spain
² Laboratori Nazionali di Frascati, Via E Fermi 40, 00044 Roma, Italy
³ CENTRA, Departamento de Física, IST, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
E-mail: pajares@fpaxp1.usc.es

Abstract. The collective interactions of many partons in the first stage of the collisions is the usual accepted explanation of the sizable elliptical flow. The clustering of color sources provides a framework of partonic interactions. In this scheme, we show a reasonable agreement with RHIC data for p_T < 1.5 GeV/c in both the dependence of v₂ on transverse momentum and in the shape of the nuclear modified factor on the azimuthal angle for different centralities. We show the predictions at LHC energies for Pb–Pb. In the case of proton–proton collisions, a sizable v₂ is obtained at this energy.

Print publication: Issue 1 (January 2010)
Received 18 May 2009, in final form 14 October 2009
Published 23 November 2009

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Particle production azimuthal asymmetries in a clustering of color sources model

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