Analysis of the hidden bottom decays of Zb(10610) and Zb(10650) via final state interaction
Abstract
We study the final-state-interaction contributions to the transitions from the Zb(10610) and Zb(10650) to S-wave bottomonium via π, ρ, and photon emission. Our estimations indicate that the final-state interaction plays important roles in the hidden bottom decays of Zb(10610) and Zb(10650). With this mechanism, the branching ratios of the observed ϒ(nS)π (n=1,2,3) channels could be reproduced and the branching ratios of Zb(10610)/Zb(10650)→ηb(mS)ρ/γ (m=1,2) are predicted, which could be further tested at Belle II in the near future.