p{sub t}-Multiplicity correlations in a multi-pomeron-exchange model with string collective effects

Journal Article · Mon Dec 15 00:00:00 EST 2008 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778808120090· OSTI ID:21404667

Armesto, N ^[1]; Derkach, D A; Feofilov, G A ^[2]

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1. Universidade de Santiago de Compostela, Departamento de Fisica de Particulas and IGFAE (Spain)
2. St. Petersburg State University, Fock Institute of Physics (Russian Federation)

The <p{sub t}>N{sub ch} - N{sub ch} correlations experimentally observed in the central rapidity region in pp and pp-bar 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{sub t}> of charged particles, the flattening with growing rapidity density of charged particles and with the collision energy, and the negative p{sub t}-N{sub 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.

• OSTI ID: 21404667
• Journal Information: Physics of Atomic Nuclei, Vol. 71, Issue 12; Other Information: DOI: 10.1134/S1063778808120090; Copyright (c) 2008 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED PARTICLES
ENERGY RANGE
EXCHANGE INTERACTIONS
FERMILAB TEVATRON
MULTIPLICITY
PARTICLE RAPIDITY
PERIPHERAL MODELS
POMERANCHUK PARTICLES
ACCELERATORS
CYCLIC ACCELERATORS
INTERACTIONS
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
QUASI PARTICLES
SYNCHROTRONS