Fluctuations and correlations in the string clustering approach
Instituto Galego de Fısica de Altas Enerxıas and Departamento de Fısica de Partıculas, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
Accepted: 1 November 2006
Published online: 26 February 2007
The fluctuations due to the clustering of color sources can explain the behaviour of the scaled multiplicity variance and transverse momentum fluctuations with centrality. They also predict a nonmonotonic behaviour with centrality for the multiplicity associated to high-pT events. The clustering of color sources gives rise to an increase in the long-range correlations with centrality as well as to a supression at high centrality with respect to superposition models.
PACS: 25.75.Nq Quark deconfinement, quark-gluon plasma production, and phase transitions – / 12.38.Mh Quark-gluon plasma – / 24.85.+p Quarks, gluons, and QCD in nuclei and nuclear processes –
© Società Italiana di Fisica and Springer-Verlag, 2007