Probing the B0 meson in a hot medium with finite chemical potential
Abstract
We employ QCD two-point sum rules to determine the B0 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 → 0 and μ→ 0, the mass and decay constant of the B0 meson are in good agreement with the available experimental data. Furthermore, at fixed chemical potentials, the B0 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.
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BibTeX
@misc{turkan2026probing,
title = {{Probing the $B^0$ meson in a hot medium with finite chemical potential}},
author = {A. Türkan and G. Bozkır and K. Azizi},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.08299},
eprint = {2609.08299},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08299},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Probing the B^0 meson in a hot medium with finite chemical potential
AU - A. Türkan
AU - G. Bozkır
AU - K. Azizi
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2609.08299
UR - https://arxiv.org/abs/2609.08299
AB - 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 → 0 and μ→ 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.
ER -