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arXiv · 1912.09164

Application of Bayesian statistics to $\eta$-meson decay constant in $\chi$PT

Marián Kolesár·Jaroslav Říha
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Abstract

The decay constant of the $\eta$-meson in the framework of 'resummed' chiral perturbation theory is discussed. A theoretical prediction is compared to the available determinations. Compatibility of these determinations with the latest fits of the SU(3) low energy coupling constants is investigated. Preliminary results for the obtained constraints on the low energy coupling constants $L^r_5$ and $L^r_4$, using Bayesian statistical approach, are presented.

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Marián Kolesár, Jaroslav Říha. 2019-12-19. Application of Bayesian statistics to $\eta$-meson decay constant in $\chi$PT. https://arxiv.org/abs/1912.09164

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