Strong decays of the $XYZ$ states

Strong decays of the $X Y Z$ states

Li Ma, Xiao-Hai Liu, Xiang Liu, and Shi-Lin Zhu

Phys. Rev. D 91, 034032 – Published 25 February 2015

Abstract

Through the spin rearrangement scheme in the heavy quark limit, we have performed a comprehensive investigation of the decay pattern and production mechanism of the hidden beauty dimeson states, which are either composed of a $P$ -wave bottom meson and an $S$ -wave bottom meson or two $S$ -wave bottom mesons. We further extend the corresponding formula to discuss the decay behavior of some charmonium-like states by combining the experimental information with our numerical results. The typical ratios presented in this work can be measured by future experiments like BESIII, Belle, LHCb and the forthcoming BelleII, which shall provide important clues to the inner structures of the exotic states.

Received 11 August 2014

DOI:https://doi.org/10.1103/PhysRevD.91.034032

Authors & Affiliations

Li Ma^1,*, Xiao-Hai Liu^1,†, Xiang Liu^2,3,‡, and Shi-Lin Zhu^1,4,§

¹Department of Physics and State Key Laboratory of Nuclear Physics and Technology and Center of High Energy Physics, Peking University, Beijing 100871, China
²Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China
³School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
⁴Collaborative Innovation Center of Quantum Matter, Beijing 100871, China

^*lima@pku.edu.cn
^†liuxiaohai@pku.edu.cn
^‡xiangliu@lzu.edu.cn
^§zhusl@pku.edu.cn

Probing the $X Y Z$ states through radiative decays

Li Ma, Zhi-Feng Sun, Xiao-Hai Liu, Wei-Zhen Deng, Xiang Liu, and Shi-Lin Zhu

Phys. Rev. D 90, 034020 (2014)

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Vol. 91, Iss. 3 — 1 February 2015

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Physical Review D

covering particles, fields, gravitation, and cosmology