Universal behavior of transverse momentum distributions of baryons and mesons in the framework of percolation of strings |
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| Authors: | L Cunqueiro J Dias de Deus EG Ferreiro C Pajares |
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| Institution: | (1) Instituto Galego de Física de Altas Enerxías, Facultad de Física, Universidade de Santiago de Compostela, 15782, Campus Sur s/n, Santiago de Compostela, Spain;(2) Departamento de Física de Partículas, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain;(3) CENTRA, Instituto Superior Técnico, 1049-001 Lisboa, Portugal |
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| Abstract: | In the framework of percolation of strings, the transverse momentum distributions in AA and hh collisions at all centralities
and energies show a universal behavior. The width of these distributions is related to the width of the distribution of the
size of the clusters formed by the overlapping of the strings produced. The difference between the distributions for baryons
and mesons originates in the fragmentation of clusters of several strings, which enhances the particles with a 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 the pp minimum bias.
PACS 25.75.Nq; 12.38.Mh; 24.85.+p |
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