Placing of the recently observed bottom strange state $B_{sJ}(6063)$ and $B_{sJ}(6114)$ in bottom spectra

Abstract

We have employed HQET to give the spin-parity quantum numbers for recently observed bottom strange states $B_{sJ}(6063)$ and $B_{sJ}(6114)$ by LHCb collaborations. By exploring flavour independent parameters ${\Delta }_F^{(c)}={\Delta }_F^{(b)}$ and ${\lambda }_F^{(c)}={\lambda }_F^{(b)}$, we calculated masses of experimentally missing bottom strange meson states $2S,1P,1D$. We have also analyzed these bottom strange masses by taking $1/m_Q$ corrections which lead modifications of parameter terms as ${\Delta }_F^{(b)}={\Delta }_F^{(c)}+\delta {\Delta }_F$ and ${\lambda }_F^{(b)}={\lambda }_F^{(c)}\delta {\lambda }_F$. Further, we have analyzed their two-body decays, couplings, and branching ratios via the emission of light pseudoscalar mesons. Based on predicted masses and decay widths, we tentatively identified the states $B_{sJ}(6063)$ as $2^3{S}_1$ and $B_{sJ}(6114)$ as $1^3{D}_1$. Our predictions provide crucial information for future experimental studies.

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• Placing the newly observed state $B_J(5840)$ in bottom spectra along with states $B_1(5721)$, $B_2^{\ast }(5747)$, $B_{s1}(5830)$, $B_{2s}^{\ast }(5840)$ and $B_J(5970)$
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