Newly observed $a_0(1817)$ as the scaling point of constructing the scalar meson spectroscopy
Dan Guo,
Wei Chen,
Hua-Xing Chen
et al.
Abstract:Stimulated by the newly observed a 0 (1817) by the BESIII Collaboration, we find a perfect Regge trajectory composed of the a 0 (980), a 0 (1450), and a 0 (1817), which leads us to categorize the a 0 (980), a 0 (1450), and a 0 (1817) into the isovector scalar meson family. This scenario is supported by their two-body Okubo-Zweig-Iizuka allowed strong decay behaviors. In this scheme, we also predict the third radial excitation of the a 0 (980), which is denoted as the a 0 (2115), accessible at future experiment… Show more
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