Evidence of the four-quark nature of $f_0(980)$ and $f_0(500)$

A.V. Kiselev; E.A. Kozyrev; G.N. Shestakov; J.V. Bennett; N.N. Achasov

Evidence of the four-quark nature of $f_0(980)$ and $f_0(500)$

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arxiv 2009.04191 v2 pith:HE3V2NO6 submitted 2020-09-09 hep-ph hep-exnucl-th

N.N. Achasov , J.V. Bennett , A.V. Kiselev , E.A. Kozyrev , G.N. Shestakov This is my paper · ORCID

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keywords four-quarklightnatureevidencefavorscalarsanalyzearea

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abstract

There exists a great deal of concrete evidence in favor of the exotic four-quark nature of light scalars. At the same time, the further expansion of the area of the $q^2\bar q^2$ model validity for light scalars on ever new processes seems extremely interesting and important. We analyze the BESIII data on the decay $J/\psi\to \gamma\pi^0\pi^0$ and show that the results of this high-statistics experiment can be interpreted in favor of the four-quark nature of light scalar mesons $f_0(980)$ and $f_0(500)$.

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Quasi-Two-Body $B\to P (K^+K^-, \pi^+\pi^-)$ Decays with $f_0(980)$ Resonance
hep-ph 2025-01 conditional novelty 5.0 of 10

PQCD predictions for quasi-two-body B -> P f0(980) -> P(K+K-, π+π-) decays, with two-body B -> P f0(980) branching fractions extracted from the pion mode.

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