# Quark Matter 2014 - XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

19-24 May 2014
Europe/Zurich timezone

## Description of ${\langle p_{\mathrm{T}}\rangle}$-${N_{\mathrm{ch}}}$ correlations in pp, pA and AA collisions in Monte Carlo model based on the interaction of color dipoles

20 May 2014, 16:30
2h

### spectrum

Board: I-16
Poster Correlations and Fluctuations

### Speaker

Vladimir Kovalenko (St. Petersburg State University (RU))

### Description

The correlation between the mean transverse momentum and the multiplicity of charged particles, recently measured by the ALICE experiment in ${{\mathrm {p\kern-0.05em p}}}$, ${{\mbox{p-Pb}}}$ and ${{\mbox{Pb-Pb}}}$ collisions at LHC, is studied in the framework of string-parton Monte-Carlo model, in which the elementary collisions are realized by interactions of color dipoles. It enables to describe pA and AA scattering without referring to the Glauber picture of independent nucleon collisions and to include the account of string fusion as a source of collectivity effects. The model reproduces multiplicity yields in wide energy range (from ISR to LHC) as well as the centrality dependence of multiplicity in ${{\mbox{Pb-Pb}}}$ collisions. The results obtained in the framework of the model for ${\langle p_{\mathrm{T}}\rangle}$-${N_{\mathrm{ch}}}$ correlations describe the main features of the experimental data. The contribution of different mechanisms to ${\langle p_{\mathrm{T}}\rangle}$-${N_{\mathrm{ch}}}$ correlation is analyzed.

### Primary author

Vladimir Kovalenko (St. Petersburg State University (RU))

### Co-author

Vladimir Vechernin (St. Petersburg State University (RU))

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