Universal behavior of baryons and mesons transverse momentum distributions in the framework of percolation of strings

TL;DR

This paper demonstrates a universal pattern in transverse momentum distributions of baryons and mesons across different collision types and energies, based on string percolation theory, with predictions for LHC energies.

Contribution

It introduces a universal behavior model for transverse momentum distributions using string percolation, explaining differences between baryons and mesons and providing LHC predictions.

Findings

Distributions follow a universal pattern across energies and centralities.

Differences between baryons and mesons are explained by cluster fragmentation.

Predictions include high pt suppression in high multiplicity pp events at LHC.

Abstract

In the framework of percolation of strings, the transverse momentum distributions in AA and hh collisions at all centralities and energies follow a universal behavior. The width of these distributions is related to the width of the distribution of the size of the clusters formed from the overlapping of the produced strings. The difference between the distributions for baryons and mesons originates in the fragmentation of clusters of several strings which enhance the particles with higher number of constituents. The results agree with SPS and RHIC data. The predictions for LHC show differences for baryons compared with RHIC. At LHC energies we obtain also a high pt suppression for pp high multiplicity events compared with pp minimum bias.