Decays of Zb -> Upsilon + pi via triangle diagrams in heavy meson molecules

Abstract

Bottomonium-like resonances Zb(10610) and Zb'(10650) are good candidates of hadronic molecules composed of BBbar* (or B*Bbar) and B*Bbar*, respectively. Considering Zb (Zb') as heavy meson molecules, we investigate the decays of Zb(')^+ -> Upsilon (nS) pi^+$ in terms of the heavy meson effective theory. We find that the intermediate B (B*) and Bbar (Bbar*) meson loops and the form factors play a significant role to reproduce the experimental values of the decay widths. We also predict the decay widths of Zc^+ -> J/ψpi^+ and psi(2S) pi^+ for a charmonium-like resonance Zc which has been reported recently in experiments.

10 pages, 5 figures

References in corpus (5)

• Observation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \sqrt{s}=4.26 GeV
• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Confirming the molecular nature of the $Z_b(10610)$ and the $Z_b(10650)$
• Decays of Zb(+) and Zb'(+) as hadronic molecules
• $Z_b/Z_b^{\prime }\to {\rm Y}\pi$ and $h_b\pi$ decays in intermediate meson loops model

Cited by in corpus (13)

• The hidden-charm pentaquark and tetraquark states
• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• Exotic Hadrons from Heavy Ion Collisions
• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps
• The line shapes of the $Z_b(10610)$ and $Z_b(10650)$ in the elastic and inelastic channels revisited
• $Z_b(10610)$ and $Z_b^{\prime }(10650)$ decays in a covariant quark model
• Production of the $Z_b^{(\prime )}$ states from the ${\rm Y}(5S,6S)$ decays
• The $Z_b$ structures in a constituent quark model coupled-channels calculation
• Investigations on the light hadron decays of $Z_b(10610)$ and $Z_b(10650)$
• Production and absorption of exotic bottomonium-like states in high energy heavy ion collisions
• $Z_b(10610)$ in a hadronic medium
• $D$ wave bottomonia production from $Z_b^{(\prime )}$ decay
• An analysis on doubly bottom molecular tetraquarks composed of $H_{(s)}$ and $T_{(s)}$ doublets