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. 2022 Feb 28;82(2):184. doi: 10.1140/epjc/s10052-022-10096-4

Table 11.

Singlet-octet and quark flavor bases mixing parameter values derived from fits performed within EBHLS2 under the F and A± configurations defined in the text. For the configuration F, ϕ=(ϕq+ϕs)/2 whereas ϕ=ϕq(=ϕs) for the A± solutions. Correspondingly, the contributions of the HLS channels for s1.05 GeV to the HVP are also given in each case; they can be compared to Table 7. The main fit properties are noted at the bottom end of the Table

EBHLS2 (BS) Sol. F Sol. A+ Sol. A- Sol. A+ Sol. A-
ϵ=κ0     and      ϵ=κ0 ϵandϵ free
θP (deg.) -15.89±0.34 -16.63±0.30 -15.78±0.28 -16.63±0.30 -15.59±0.28
θ0 (deg.) -6.35±0.47 -8.04±0.39 -8.05±0.33 -7.95±0.39 -7.71±0.34
θ8 (deg.) -24.55±0.30 -24.44±0.25 -22.83±0.27 -24.50±0.25 -22.77±0.28
θ0-θ8 (deg.) 18.21±0.24 16.45±0.23 14.85±0.24 16.59±0.23 15.13±0.24
F0/fπ 1.166±0.006 1.190±0.003 1.190±0.003 1.184±0.003 1.187±0.003
F8/fπ 1.293±0.003 1.315±0.003 1.302±0.003 1.309±0.003 1.302±0.003
FKS ϕ (deg.) 38.85±0.35 38.96±0.27 38.08±0.29 38.09±0.30 39.15±0.27
ϕq-ϕs (deg.) 0.39±0.18 0 0 0 0
Fq/fπ 1.008±0.007 1.050±0.003 1.066±0.004 1.044±0.003 1.061±0.004
Fs/fπ 1.418±0.005 1.428±0.004 1.405±0.004 1.423±0.004 1.406±0.004
Fs/fK 1.192±0.003 1.198±0.003 1.181±0.002 1.195±0.002 1.182±0.002
fK/fπ 1.190±0.002 1.193±0.002 1.189±0.002 1.191±0.002 1.190±0.002
1010×aμ(HLS) 572.52±1.02 571.84±0.98 572.44±0.98 575.00±0.95 572.59±0.99
χ2/Npts 1280/1366 1309/1366 1289/1366 1292/1366 1286/1366
Probability 85.9% 70.6% 82.5% 80.1% 83.5%