1308.0887 (K. Azizi et al.)

Thermal properties of $D_2^*(2460)$ and $D_{s2}^*(2573)$ tensor mesons    [PDF]

K. Azizi, H. Sundu, A. Turkan, E. Veli Veliev

We investigate the masses and decay constants of the heavy-light tensor mesons $D_2^*(2460)$ and $D_{s2}^*(2573)$ in the framework of thermal QCD sum rules. Taking into account additional operators arising at finite temperature, we evaluate Wilson expansion for two-point correlation function associated with the above mentioned mesons. We observe that the values of the masses and decay constants decrease considerably at near to the critical temperature. The decay constants attain roughly to 25% of their values in vacuum, while the masses decrease about 39% and 37% for $D_2^*$ and $D_{s2}^*$ states, respectively. This can be considered as a sign of phase transition to the quark-gluon plasma.

View original: http://arxiv.org/abs/1308.0887