期刊
PHYSICAL REVIEW C
卷 79, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.79.014907
关键词
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资金
- Korean Ministry of Education [BK21]
- Korean Research Foundation [KRF-2006-C00011]
- Yonsei University research fund
We investigate the changes of the masses and widths of chi(c0) and chi(c1) in hot gluonic matter near T-c and in a nuclear medium using QCD sum rules. As in the previous works for the J/psi and eta(c), in-medium effects are incorporated through the changes of gluon condensates. Twist-2 terms for the P-3(0)(chi(c0)) and P-3(1)(chi(c1)) are also included for the first time. The results show that larger mass shifts and width broadenings take place as compared to the S-wave states. As the critical change take place near T-c, related measurements can reveal critical phenomenon in QCD.
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