Decays of ZbΥπ via triangle diagrams in heavy meson molecules

S. Ohkoda, S. Yasui, and A. Hosaka
Phys. Rev. D 89, 074029 – Published 11 April 2014

Abstract

Bottomoniumlike resonances Zb(10610) and Zb(10650) are good candidates to be hadronic molecules composed of BB¯* (or B*B¯) and B*B¯*, respectively. In this paper, considering Zb() as heavy meson molecules, we investigate the decays of Zb()+Υ(nS)π+ in terms of the heavy meson effective theory. We find that the intermediate B(*) and B¯(*) meson loops and the form factors play a significant role in reproducing the experimental values of the decay widths. We also predict the decay widths of Zc+J/ψπ+ and ψ(2S)π+ for a charmoniumlike resonance Zc, which has recently been reported in experiments.

  • Figure
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  • Received 18 October 2013

DOI:https://doi.org/10.1103/PhysRevD.89.074029

© 2014 American Physical Society

Authors & Affiliations

S. Ohkoda1, S. Yasui2, and A. Hosaka1,3

  • 1Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan
  • 2KEK Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1, Oho, Ibaraki 305-0801, Japan
  • 3J-PARC Branch, KEK Theory Center, Institute of Particle and Nuclear Studies, KEK, Tokai, Ibaraki 319-1106, Japan

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Vol. 89, Iss. 7 — 1 April 2014

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