Thermal properties of light tensor mesons via QCD sum rules

TL;DR

This study investigates how the masses and decay constants of light tensor mesons change with temperature using QCD sum rules, revealing significant decreases near the critical temperature.

Contribution

It provides the first detailed analysis of thermal effects on light tensor mesons' properties within the QCD sum rules framework, including new operators at finite temperature.

Findings

Decay constants decrease by 70-85% at critical temperature.

Masses diminish by 60-72% with increasing temperature.

Results align with experimental data at zero temperature.

Abstract

The thermal properties of $f_{2}(1270)$, $a_{2}(1320)$ and $K_2^*(1430)$ light tensor mesons are investigated in the framework of QCD sum rules at finite temperature. In particular, the masses and decay constants of the light tensor mesons are calculated taking into account the new operators appearing at finite temperature. The numerical results show that at the point which the temperature-dependent continuum threshold vanishes, the decay constants decrease with amount of $(70-85)\%$ compared to their vacuum values, while the masses diminish about $(60-72)\%$ depending on the kinds of the mesons under consideration. The results obtained at zero temperature are in good consistency with the experimental data as well as existing theoretical predictions.