{Psi}{sup {prime}}/{Psi} Ratio in Nucleus-Nucleus Collisions: A Measure for the Chiral Symmetry Restoration Temperature?
Journal Article
·
· Physical Review Letters
- Physics Department, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States)
We argue that a decrease of the chiral scalar meson mass is responsible for recreation of {Psi}{sup {prime}} from J/{Psi} in ultrarelativistic nucleus-nucleus collisions. This causes the charmonium yields to freeze out at temperatures close to the chiral symmetry restoration temperature T{sub c} . As a result the ratio {Psi}{sup {prime}}/{Psi} may serve as a thermometer for T{sub c} itself. Results in a detailed reaction model support the conjecture. They show good agreement with recent data of NA38 and NA50 for J/{Psi} and {Psi}{sup {prime}} production in S on U and Pb on Pb collisions. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- New York State University Research Foundation
- DOE Contract Number:
- FG02-88ER40388
- OSTI ID:
- 632675
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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