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Anomalous radiative transitions between $h_b(nP)$ and $\eta_b(mS)$ and hadronic loop effect
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abstract
In this work, we introduce the hadronic loop contribution to explain the anomalous radiative transitions between $h_b(nP)$ and $\eta_b(mS)$, which was recently observed by the Belle Collaboration. Our calculation shows that the hadronic loop mechanism associated with these known decay mechanisms can explain why there exist anomalous radiative transitions between $h_b(nP)$ and $\eta_b(mS)$. This study deepens our understanding of the decay mechanism of higher bottomonium radiative decays.
Forward citations
Cited by 2 Pith papers
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Medium modifications of $1P$-wave charmonia $\chi_{cJ}(1P)$ in cold nuclear matter
χcJ(1P) masses drop by 34–97 MeV in nuclear matter in the QMC+unquenched-loop model, with the D*D̄* loop dominating χc2 and no D-D̄ threshold crossing below 3ρ0.
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Unquenched Charmonium and Beyond
This Lanzhou-group review argues that coupled-channel (unquenched) effects, not exotic constituents, are the common thread explaining charmonium anomalies from the rho-pi puzzle to the Y-problem states.
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