TY - JOUR

T1 - Strongly Intensive Observables as a Tool for Studying Clusters of Quark–Gluon Strings in Relativistic Hadron Interactions

AU - Belokurova, S. N.

AU - Vechernin, V. V.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - Abstract: Within the model with quark–gluon strings (color flux tubes) as sources, the properties of the strongly intensive variable $$\Sigma $$ , which characterizes correlations between the number of particles, which are detected in pp interactions at LHC energies in two observation windows separated in rapidity, are investigated. It is found that the behavior of this variable observed in the ALICE experiment can be explained only in the presence of different type sources, the role of which in the model is played by single strings and the clusters formed by the fusion of several strings. It is shown that a comparison of the model results with the preliminary experimental ALICE data obtained in pp collisions at energies of 0.9 and 7 TeV makes it possible to extract data on the parameters characterizing the clusters with different numbers of fused strings. The dependence of the observable $$\Sigma $$ on a degree of the pp-collision centrality is also studied. In general, it is shown that in pp collisions at LHC energies, the increase in this variable with the initial energy and centrality of collisions in pp interactions is explained by the increasing contribution from the formation of string clusters consisting of a growing number of fused strings.

AB - Abstract: Within the model with quark–gluon strings (color flux tubes) as sources, the properties of the strongly intensive variable $$\Sigma $$ , which characterizes correlations between the number of particles, which are detected in pp interactions at LHC energies in two observation windows separated in rapidity, are investigated. It is found that the behavior of this variable observed in the ALICE experiment can be explained only in the presence of different type sources, the role of which in the model is played by single strings and the clusters formed by the fusion of several strings. It is shown that a comparison of the model results with the preliminary experimental ALICE data obtained in pp collisions at energies of 0.9 and 7 TeV makes it possible to extract data on the parameters characterizing the clusters with different numbers of fused strings. The dependence of the observable $$\Sigma $$ on a degree of the pp-collision centrality is also studied. In general, it is shown that in pp collisions at LHC energies, the increase in this variable with the initial energy and centrality of collisions in pp interactions is explained by the increasing contribution from the formation of string clusters consisting of a growing number of fused strings.

UR - https://www.mendeley.com/catalogue/1c40fbaa-1cc7-3b0b-84b6-503cefd916c5/

U2 - 10.1134/s106377962303005x

DO - 10.1134/s106377962303005x

M3 - Article

VL - 54

SP - 536

EP - 541

JO - Physics of Particles and Nuclei

JF - Physics of Particles and Nuclei

SN - 1063-7796

IS - 3

ER -