$B_c, B^{*}_c, B_s, B^{*}_s, D_s$ and $D^{*}_s$ mass shift in a nuclear medium

S. L. P. G. Beres

$B_c, B^{}_c, B_s, B^{}_s, D_s$ and $D^{*}_s$ mass shift in a nuclear medium

High Energy Physics - Phenomenology 2024-07-26 v2 Nuclear Theory Computational Physics

Authors: S. L. P. G. Beres

Abstract

For the first time, we estimate the in-medium mass shift of the two-flavored heavy mesons $B_c, B_c^*, B_s, B_s^*, D_s$ and $D_s^*$ in symmetric nuclear matter. The estimates are made by evaluating the lowest order one-loop self-energies. The enhanced excitations of intermediate state heavy-light quark mesons in symmetric nuclear matter are the origin of their negative mass shift. Our results show that the magnitude of the mass shift for the $B_c$ meson ( $\bar{b} c$ or $b \bar{c}$ ) is larger than those of the $\eta_c (\bar{c} c)$ and $\eta_b (\bar{b} b)$ , different from a naive expectation that it would be in-between of them. While, that of the $B_c^*$ shows the in-between of the $J/\psi$ and $\Upsilon$ . We observe that the lighter vector meson excitation in each meson self-energy gives a dominant contribution for the corresponding meson mass shift, $B_c, B_s,$ and $D_s$ .

Keywords

B_c meson nuclear medium mass shift self-energy heavy-light quark mesons

Cite

@article{arxiv.2407.03377,
  title  = {$B_c, B^{*}_c, B_s, B^{*}_s, D_s$ and $D^{*}_s$ mass shift in a nuclear medium},
  author = {S. L. P. G. Beres},
  journal= {arXiv preprint arXiv:2407.03377},
  year   = {2024}
}

Comments

Master's thesis