Phenomenology of $D_{s1}$ mesons radiative transitions

Abstract

We discuss radiative transitions $D_{s1}\to D_s\gamma$ and $D_{s1}\to D_s^{\ast }\gamma$ of $p$-wave mesons. Since $D_{s1}$ mesons have no a certain $C$-parity, and the masses of quarks in these mesons differ significantly, then due to the spin-orbit interaction each of $p$-wave mesons with the total angular momentum $J=1$ is a superposition of states with the total spin of quarks $S_{tot}=0$ and $S_{tot}=1$. We explain why the partial width of $D_{s1}(2460)\to D_s\gamma$ radiative transition is significantly larger than the corresponding value for $D_{s1}(2536)\to D_s\gamma$. We also predict the corresponding partial widths of $B_{s1}$ and $B_{c1}$.

11 pages

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Cited by in corpus (2)

• Exotic hadrons associated with $b$-quark
• What can we learn from the radiative decays of the $D_{s1}(2460)$ meson?