https://doi.org/10.1051/epjconf/202429102002
Signatures for tetraquark mixing from partial decay widths of the two light-meson nonets*
1
Center for Extreme Nuclear Matters, Korea University, Seoul 02841, Korea
2
School of Liberal Arts and Science, Korea Aerospace University, Goyang, 412-791, Korea
* This talk is mainly based on Ref. [1].
** e-mail: bkhc5264@korea.ac.kr
Published online: 16 February 2024
In this talk, we present successful aspects of the tetraquark mixing model for the two light-meson nonets in the JPC = 0++ channel, the light nonet [a0(980), K*0(700), ƒ0(500), ƒ0(980)] and the heavy nonet [a0(1450), K0*(1430), ƒ0(1370), ƒ0(1500)]. In particular, we focus on how their experimental partial decay widths extracted from Particle Data Group (PDG) can support this mix ing model. Currently, the experimental data exhibit an unnatural tendency that partial widths of the light nonet are consistently larger than those of the heavy nonet. This unnatural tendency can be explained if the coupling into two pseudoscalar mesons is enhanced in the light nonet and suppressed in the heavy nonet as predicted by the tetraquark mixing model. Therefore, this could be strong evidence to support for the tetraquark mixing model.
© The Authors, published by EDP Sciences, 2024
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