Exploring the ${\rm Y}(6S)\to {\chi }_{bJ}\varphi$ and ${\rm Y}(6S)\to {\chi }_{bJ}\omega$ hidden-bottom hadronic transitions

Abstract

In this work, we investigate the hadronic loop contributions to the ${\rm Y}(6S)\to {\chi }_{bJ}\varphi (J=0,1,2)$ along with ${\rm Y}(6S)\to {\chi }_{bJ}\omega (J=0,1,2)$ transitions. We predict that the branching ratios of ${\rm Y}(6S)\to {\chi }_{b0}\varphi$, ${\rm Y}(6S)\to {\chi }_{b1}\varphi$ and ${\rm Y}(6S)\to {\chi }_{b2}\varphi$ are $(0.68\sim 4.62)\times 10^{-6}$, $(0.50\sim 3.43)\times 10^{-6}$ and $(2.22\sim 15.18)\times 10^{-6}$, respectively and those of ${\rm Y}(6S)\to {\chi }_{b0}\omega$, ${\rm Y}(6S)\to {\chi }_{b1}\omega$ and ${\rm Y}(6S)\to {\chi }_{b2}\omega$ are $(0.15\sim 2.81)\times 10^{-3}$, $(0.63\sim 11.68)\times 10^{-3}$ and $(1.08\sim 20.02)\times 10^{-3}$, respectively. Especially, some typical ratios, which reflect the relative magnitudes of the predicted branching ratios, are given, i.e., for ${\rm Y}(6S)\to {\chi }_{bJ}\varphi$ transitions, ${\mathcal{R}}_{10}^{\varphi }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b1}\varphi ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b0}\varphi ]\approx 0.74$, ${\mathcal{R}}_{20}^{\varphi }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b2}\varphi ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b0}\varphi ]\approx 3.28$, and ${\mathcal{R}}_{21}^{\varphi }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b2}\varphi ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b1}\varphi ]\approx 4.43$, and for ${\rm Y}(6S)\to {\chi }_{bJ}\omega$ transitions, ${\mathcal{R}}_{10}^{\omega }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b1}\omega ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b0}\omega ]\approx 4.11$, ${\mathcal{R}}_{20}^{\omega }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b2}\omega ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b0}\omega ]\approx 7.06$, and ${\mathcal{R}}_{21}^{\omega }=\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b2}\omega ]/\mathcal{B}[{\rm Y}(6S)\to {\chi }_{b1}\omega ]\approx 1.72$. With the running of BelleII in the near future, experimental measurement of these two kinds of transitions will be a potential research issue.

arXiv comment10 pages, 10 figures and 1 table. Accepted by Eur. Phys. J. C

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• Predicted $\Lambda \bar{\Lambda }$ and ${\Xi }^{-}{\bar{\Xi }}^{+}$ decay modes of the charmoniumlike $Y(4230)$
• Proposal of searching for the ${\rm Y}(6S)$ hadronic decays into ${\rm Y}(nS)$ plus ${\eta }^{(\prime )}$
• Hidden-bottom hadronic transitions of ${\rm Y}(10753)$
• How higher charmonia shape the puzzling data of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section
• Higher strangeonium decays into light flavor baryon pairs like $\Lambda \bar{\Lambda }$, $\Sigma \bar{\Sigma }$, and $\Xi \bar{\Xi }$
• Production of charmonium ${\chi }_{cJ}(2P)$ plus one $\omega$ meson by $e^{+}{e}^{-}$ annihilation
• Observation of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0{\chi }_{b1,2}(1P)$ and search for $e^{+}{e}^{-}\to \varphi {\chi }_{b1,2}(1P)$ at $\sqrt{s}=$10.96---11.05 GeV
• Charmonium decays into ${\Lambda }_c{\bar{\Lambda }}_c$ pair governed by the hadronic loop mechanism
• Non-$D\bar{D}$ Decays into Light Meson Pairs of the $D$-Wave Charmonium ${\psi }_3(3842)$
• Strong decays of the isovector-scalar $D^{\ast }{\bar{D}}^{\ast }$ hadronic molecule