TY - JOUR

T1 - Relativistic effects in heavy mesons

AU - Obraztsov, I.V.

AU - Bondar, A.E.

AU - Milstein, A.I.

N1 - The work of I.V. Obraztsov was supported by the Foundation for the Advancement of Theoretical Physics and Mathematics “BASIS” under Grant No. 24-1-5-3-1.

PY - 2026/9

Y1 - 2026/9

N2 - We discuss the application of a relativistic potential model to the description of the spectrum and radiative transitions in mesons containing at least one heavy quark (b or c). Although the model has a small number of parameters, it is possible to achieve qualitative agreement with all available experimental data, including those that could not be explained by all previous methods. This demonstrates the importance of taking relativistic effects into account. A remarkable property of the relativistic potential model is that the predictions for meson masses and partial widths of radiative transitions remain finite in the limit of zero light quark mass.

AB - We discuss the application of a relativistic potential model to the description of the spectrum and radiative transitions in mesons containing at least one heavy quark (b or c). Although the model has a small number of parameters, it is possible to achieve qualitative agreement with all available experimental data, including those that could not be explained by all previous methods. This demonstrates the importance of taking relativistic effects into account. A remarkable property of the relativistic potential model is that the predictions for meson masses and partial widths of radiative transitions remain finite in the limit of zero light quark mass.

KW - Mesons

KW - Radiative transitions

KW - Quark model

KW - Spectroscopy

UR - https://www.scopus.com/pages/publications/105037535423

U2 - 10.1016/j.nuclphysa.2026.123418

DO - 10.1016/j.nuclphysa.2026.123418

M3 - Article

VL - 1073

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

M1 - 123418

ER -