Strong decay of in light cone sum rules*

Abstract

In this work, we assign the tetraquark state for $Y(4230)$ resonance,
and investigate the mass and decay constant of $Y(4230)$ in the framework of SVZ sum rules through a different calculation technique. 
Then we calculate the strong coupling $g_{Y J/\psi f_0}$ by considering soft-meson approximation techniques, within the framework of light cone sum rules. 
And we use strong coupling $g_{Y J/\psi f_0}$ to obtain the width of the decay $Y(4230)\to J/\psi f_0(980)$.
Our prediction for the mass is in agreement with the experimental measurement,
and that for the decay width of $Y(4230)\to J/\psi f_0(980)$ is within the upper limit. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.