Study ofππcorrelations at LHC and RHIC energies inppcollisions within the quark-gluon string model

The quark-gluon string model reproduces well the global characteristics of the $pp$ collisions at energies of $\sqrt{s}=200\text{ }\text{ }\mathrm{GeV}$ (RHIC) and $\sqrt{s}=900\text{ }\text{ }\mathrm{GeV}$ (LHC). In present paper the quark-gluon string model is employed for the description of femtoscopic characteristics of identical pions produced in the aforementioned reactions. The study is concentrated on the low multiplicity and multiplicity averaged events, where no collective effects are expected. The different procedures for fitting the one-dimensional correlation functions of pions are studied and compared with the space-time distributions extracted directly from the model. Particu…