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))
