Year: 2026
Type: preprint
Abstract: We employ QCD two-point sum rules to determine the $B^{0}$ meson mass and decay constant as functions of temperature $T$ and chemical potential $μ$, using the perturbative spectral density and nonperturbative contributions up to mass dimension five. Numerical analysis indicates that, in the limits $T \to 0$ and $μ\to 0$, the mass and decay constant of the $B^{0}$ meson are in good agreement with the available experimental data. Furthermore, at fixed chemical potentials, the $B^{0}$ meson mass and decay constant initially increase with temperature, reach their maxima, and then decrease to zero, with the increase being more pronounced for the decay constant than for the mass. The temperatures at which both quantities vanish decrease as the chemical potential increases. At fixed temperatures, both quantities initially increase slightly with chemical potential before decreasing and eventually vanishing, with the mass exhibiting a much weaker decrease in vacuum. The vanishing points of both quantities shift toward lower chemical potentials as the temperature increases, following a trend similar to that observed in the QCD phase diagram. The results obtained in this study are expected to contribute to the interpretation of data from ongoing heavy-ion collision experiments and to the generation of data for future planned experiments focusing on $B$ mesons, quark-gluon plasma signatures, and dense matter environments.
Source: arXiv (Cornell University)
Authors: Türkan, A., Bozkır, G., Azizi, K.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7212060554