Resolution:
## Figure 5.
Doping dependences of NQP properties. The real and imaginary parts of mass enhancement spectra were directly deduced from
the APRES data shown in Figure
4[7]. (a) Inverse group velocity, 1/v_{g}(ω) = [1 + Re λ(ω)]/v_{0}, determined from (d/dω) k(ω). (b) Differential scattering rate -Im λ(ω)/v_{0}, deduced from the Kramers-Kronig transform (KKT) of (a). (c) Partial coupling constants, λ^{LE} (red circles) and λ^{IE} (blue triangles), deduced from (b). Also shown are the inverse group velocities at ω = 0 (black circles) and at ω = -40 meV (black triangles). (d) Differential scattering rate -Im λ(ω)/v_{0}, directly determined from -(d/dω) Δk(ω). (e) Partial coupling constants, λ^{LE} (red circles), λ^{IE} (blue triangles), and λ^{HE} (green diamonds), deduced from (d).
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