https://doi.org/10.1140/epjp/s13360-023-04809-1
Regular Article
Application of Bayesian statistics to the sector of decay constants in three-flavour 
PT
Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Charles University in Prague, V Holešovičkách 2, 18000, Prague, Czech Republic
Received:
6
April
2023
Accepted:
19
December
2023
Published online:
8
January
2024
The sector of decay constants of the octet of light pseudoscalar mesons in the framework of ‘resummed’ SU(3) chiral perturbation theory is investigated. A theoretical prediction for the decay constant of 
-meson is compared to a range of available determinations. Compatibility of these determinations with the latest fits of the SU(3) low energy coupling constants is discussed. Using a Bayesian statistical approach, constraints on the low energy coupling constants 
and 
, as well as higher order remainders to the decay constants 
and 
, are extracted from the most recent experimental and lattice QCD inputs for the values of the decay constants.
© The Author(s) 2024
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