Comparison of strangeness production between A+A and p+p reactions from 2 to 160 A GeV

Journal Article · Wed Mar 01 00:00:00 EST 2000 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.61.031901· OSTI ID:20215661

Dunlop, J C ^[1]; Ogilvie, C A ^[1]

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1. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

The measured K{sup +}/{pi}{sup +} ratios from heavy-ion reactions are compared with the K{sup +}/{pi}{sup +} ratios from p+p reactions over the energy range 2-160 A GeV. The K/{pi} enhancement in heavy-ion reactions is largest at the lower energies, consistent with strangeness production in secondary scattering becoming relatively more important than initial collisions near the kaon production threshold. The enhancement decreases steadily from 4 to 160 A GeV, suggesting that the same enhancement mechanism of hadronic rescattering and decay of strings may be applicable over this full energy range. Based on existing data, the midrapidity K{sup +}/{pi}{sup +} ratio is predicted to be 0.25{+-}0.02 for the forthcoming Pb+Pb reactions at 40 A GeV/c. (c) 2000 The American Physical Society.

• OSTI ID: 20215661
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 61, Issue 3; Other Information: PBD: Mar 2000; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HEAVY ION REACTIONS
PROTON-PROTON INTERACTIONS
KAONS PLUS
PIONS PLUS
STRANGENESS
NUCLEAR MATTER
EXPERIMENTAL DATA
THEORETICAL DATA