Particle ratios in the central region of high-energy proton-proton collisions
1975; Elsevier BV; Volume: 84; Issue: 1 Linguagem: Inglês
10.1016/0550-3213(75)90548-9
ISSN1873-1562
Autores Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoRecent data from NAL on particle ratios K−π− and pπ− at large transverse momentum are analysed with emphasis on the surprising discovery that pions increase their dominance over heavier hadrons at increasing transverse momentum. It is argued that this is not a phase space or threshold effect but a dynamical feature that can be used to test theoretical models of multiparticle production. Most models of interest, such as for instance the parton, the hydrodynamical and the two-component model, may however be extended, in a simple-minded way, to kaon and antiproton production as to predict ratios of heavier to lighter hadrons to fall with increasing large transverse momentum.
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