TY  - JOUR
AU  - Bornyakov, V. G.
AU  - Horsley, R.
AU  - Nakamura, Y.
AU  - Perlt, H.
AU  - Pleiter, Dirk
AU  - Rakow, P. E. L.
AU  - Schierholz, G.
AU  - Schiller, A.
AU  - Stüben, H.
AU  - Zanotti, J. M.
TI  - Flavour breaking effects in the pseudoscalar meson decay constants
JO  - Physics letters / B
VL  - 767
SN  - 0370-2693
CY  - Amsterdam
PB  - North-Holland Publ.
M1  - FZJ-2017-04066
SP  - 366 - 373
PY  - 2017
AB  - The SU(3) flavour symmetry breaking expansion in up, down and strange quark masses is extended from hadron masses to meson decay constants. This allows a determination of the ratio of kaon to pion decay constants in QCD. Furthermore when using partially quenched valence quarks the expansion is such that SU(2) isospin breaking effects can also be determined. It is found that the lowest order SU(3) flavour symmetry breaking expansion (or Gell-Mann–Okubo expansion) works very well. Simulations are performed for 2+12+1 flavours of clover fermions at four lattice spacings.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000397861700058
DO  - DOI:10.1016/j.physletb.2017.02.018
UR  - https://juser.fz-juelich.de/record/830534
ER  -