Year: 2025
Type: article
Abstract: We study the thermal behavior of quarkonia and fully-heavy tetraquark states associated to the charmonium, bottomonium and bottom-charmonium mass spectra. The starting point is the Schrödinger formalism with a vacuum Cornell-like potential. The spin-spin, spin-orbit and tensor contributions are also considered to describe the structure of the vacuum quarkonia $$Q\bar{Q}$$ Q Q ¯ spectra ( Q denoting c , b quarks). The parameters of the model are fixed using the experimental data of the $$Q\bar{Q}$$ Q Q ¯ states. After that, this formalism is extended to the fully-heavy tetraquark states within the $$1^3 S_1$$ 1 3 S 1 axial diquark– $$1^3 S_1$$ 1 3 S 1 axial antidiquark configuration $$[QQ] [\bar{Q} \bar{Q}]$$ [ Q Q ] [ Q ¯ Q ¯ ] , and their vacuum mass spectra are obtained and compared to the experimental data recently obtained. Our predictions support the interpretation of the X (6600) (or X (6552)), X (6900) and X (7200) states as the radially-excited $$T_{4c}(n^1S_0)$$ T 4 c ( n 1 S 0 ) configurations with $$n=2,3,4$$ n = 2 , 3 , 4 . In the sequence, we evaluate the mass spectra behavior in a thermal medium, by introducing a modified temperature-dependent Cornell potential. As a consequence, this formalism enables us to get some insight into the dissociation mechanism of $$[QQ] [\bar{Q} \bar{Q}]$$ [ Q Q ] [ Q ¯ Q ¯ ] states caused by a thermal medium, and into the tempera
Source: The European Physical Journal C
Institution: Universidade Federal da Bahia
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4412873279