QCD isospin breaking in meson masses, decay constants and quark mass ratios
By G. Amorós, J. Bijnens, P. Talavera. 2001
168 citations recorded by the source corpus.
Abstract The procedure to calculate masses and matrix-elements in the presence of mixing of the basis states is explained in detail. We then apply this procedure to the two-loop calculation in Chiral Perturbation Theory of pseudoscalar masses and decay constants including quark mass isospin breaking. These results are used to update our analysis of K l4 done previously and obtain a value of m u / m d in addition to values for the low-energy-constants L i r .
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/7d1b035d4c24c58700a0b96f9e06d18c0066ad09
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In Nuclear and High Energy Physics
Citations in the corpus
- Kaon Decays in the Standard Model (2011, result): “Such a small value of Q [compared to Q = 22.7± 0.8 given by Leutwyler (1996)] was also supported by other studies [Q = 22.0±0.6 in Bijnens and Prades (1997) and Q ' 20 in Amorós et al. (2001)].”
- Review of lattice results concerning low-energy particle physics (2010, background): “The corrections of next-to-next-to-leading order (NNLO) have been worked out [92], but the numerical evaluation of the formulae again meets with the problem that the relevant effective coupling constants are not reliably known.”
- Review of lattice results concerning low-energy particle physics (2016, background): “[130], but the numerical evaluation of the formulae again meets with the problem that the relevant effective coupling constants are not reliably known.”