1304.0372 (Dian-Yong Chen et al.)

Anomalous radiative transitions between $h_b(nP)$ and $η_b(mS)$ and
hadronic loop effect    [PDF]

Dian-Yong Chen, Xiang Liu, Takayuki Matsuki

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 mechanism can explain why there exist anomalous radiative transitions between $h_b(nP)$ and $\eta_b(mS)$. This study deeps our understanding of the decay mechanism of higher bottomonium radiative decays.

View original: http://arxiv.org/abs/1304.0372