A generalization of the multi-pomeron exchange model [1] - [5] is proposed to describe the nucleus-nucleus collisions at high energy taking into account the yield of hadrons containing heavy quarks. The main feature of this model is the effective consideration of string collectivity with the help of the dedicated parameter relevant to the modification of string tension in case of string fusion process. In this model, an increase in the string tension, in a certain class of events with high multiplicity, allows the creation of particles containing c quark in the process of string fragmentation. The model parameters are fixed from the data on main multiplicity dependence of the transverse momentum at pp and p\bar{p} collisions over a wide energy range (from ISR to LHC). The multiplicity of strange and charm particles, their transverse momentum, and correlations are obtained at the LHC energy. The predictions of the model are compared to the experimental data.
The research was supported by the grant of the Russian Science Foundation (project 16-12-10176).