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arXiv · 1808.08843

Determination of $f_0 - a_0^0$ mixing angle from QCD sum rules

T. M. Aliev·S. Bilmis
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Abstract

By assuming that the $f_0$ and $a_0^0$ mesons are mixed states of the two-quark - tetraquark, the mixing angle between them is estimated within QCD sum rules method, and it is obtained that the mixing angle is $(6.03 \pm 0.08)^\circ$. Our prediction on mixing angle can be checked in further experiments which can shed light on choosing the "right" structure of $f_0$ and $a_0^0$ mesons.

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T. M. Aliev, S. Bilmis. 2018-08-27. Determination of $f_0 - a_0^0$ mixing angle from QCD sum rules. https://doi.org/10.1140/epja/i2018-12584-4

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