Kaon production from hot and dense matter formed in heavy-ion collisions

Journal Article · Mon Apr 01 00:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.1881· OSTI ID:5653472

Brown, G E ^[1]; Ko, C M; Wu, Z G; Xia, L H ^[2]

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1. Physics Department, State University of New York at Stony Brook, Stony Brook, New York 11794 (USA)
2. Cyclotron Institute, Texas A M University, College Station, Texas 77843 (USA) Physics Department, Texas A M University, College Station, Texas 77843 (USA)

In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. These models are then extended to determine kaon production in hot, dense nuclear matter by taking into account the decreasing hadron masses as a result of the restoration of chiral symmetry and the condensation of kaons. We find that the cross sections for kaon production from all three processes are enhanced. In particular, the effect of decreasing hadron masses on kaon production from the meson-meson annihilation is most significant. In the hydrochemical model for heavy-ion collisions, we demonstrate that the observed enhancement of kaon yield in high-energy heavy-ion collisions can be explained if the medium effect is included.

• DOE Contract Number: FG02-88ER40388
• OSTI ID: 5653472
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 43:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HEAVY ION REACTIONS
PARTICLE PRODUCTION
KAONS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
CHIRAL SYMMETRY
CROSS SECTIONS
ISOSPIN
MESON-MESON INTERACTIONS
NUCLEAR MATTER
PHASE SPACE
BASIC INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MATTER
MESONS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PSEUDOSCALAR MESONS
SPACE
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY
653003* - Nuclear Theory- Nuclear Reactions & Scattering
653002 - Nuclear Theory- Nuclear Matter