In-medium modification of P-wave charmonia from QCD sum rules

Details In-medium modification of P-wave charmonia from QCD sum rules In-medium modification of P-wave charmonia from QCD sum rules

2008-08-08

arxiv.org/abs/0808.1153v2

Phys.Rev.C79:014907,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 6 figures, to be published in Phys.Rev.C

Scientific paper

10.1103/PhysRevC.79.014907

We investigate the changes of the masses and widths of $\chi_{c0}$ and $\chi_{c1}$ in hot gluonic matter near $T_c$ and in 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 $^3 P_0 (\chi_{c0})$ and $^3 P_1 (\chi_{c1})$ 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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