Figure 26
From: B meson decays
(B → τ ν) as a function of the effective scalar coupling gs. The shaded region is the measure data ±1σ The range of theoretical predictions is obtained by assuming |Vub| = (3.38 ± 0.35) × 10-3 [184], and fB= (0.197 ± 0.06 ± 0.012) MeV [210]. (The curves are theoretical and explained in the text.