P t -Multiplicity correlations in a multi-pomeron-exchange model with string collective effects

N. Armesto, D. A. Derkach, G. A. Feofilov

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The p t N ch - N ch correlations experimentally observed in the central rapidity region in pp and p collisions, in a wide energy range from the ISR to Tevatron, are described in the framework of a multi-Pomeron exchange model in which string collectivity has been included in an effective way. Three parameters are obtained from the fit to data: the string tension, the average number of particles per string, and a parameter which effectively introduces string collective effects. The model successfully reproduces the rise of p t of charged particles, the flattening with growing rapidity density of charged particles and with the collision energy, and the negative p t -N ch correlation at low energies. The string tension and the average number of particles per string are energy independent, while the parameter that includes effectively string collective effects shows a smooth increasing behavior with energy.

Original languageEnglish
Pages (from-to)2087-2095
Number of pages9
JournalPhysics of Atomic Nuclei
Volume71
Issue number12
DOIs
StatePublished - 1 Dec 2008

Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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