24 FIG. 6: FB asymmetry in B → K ∗ ℓ $^{+}$ℓ − in the low- q 2 (left panel) and the high- q 2 region (right panel). The red and the blue regions correspond to m$_{t}$ ′ = 400 and 600 GeV respectively and the grey region represents the SM prediction.  0  0.05  0.1  0.15  0.2  0.25  0.3  0.35  0.4  0.45  0.5  16.5  17  17.5  18  18.5  19  19.5 A FB (z)( B -> K *  l +  l -  ) q$^{2}$ (GeV) 2 -0.2 -0.1  0  0.1  0.2  0.3  0.4  0  1  2  3  4  5  6  7  8 A FB (z)( B -> K *  l +  l -  ) q$^{2}$ (GeV) 2 inclusive decay b → sℓ $^{+}$ℓ − due to the uncertainty in the determination of the hadronic form factors appearing in the transition amplitude B → K ∗ . However the exclusive decays are more readily accessible in the experiments. Therefore despite the large theoretical errors, the precise measurement of the exclusive decays could provide hints for possible deviations from the SM. The decay B → K ∗ ℓ $^{+}$ℓ − has been observed at the Babar and Belle experiments [99– 101]. Within the present experimental and theoretical precisions, the measured branching ratio is in agreement with the SM prediction [95, 102]. However the measurements of the invariant dilepton mass is sparse. It is expected that the precise measurements of the Dalitz distributions in B → K ∗ ℓ $^{+}$ℓ − is possible at the LHCb and at the Super B factories. In particular, the measurement of FB asymmetry in B → K ∗ ℓ $^{+}$ℓ − is of great importance. This is because the uncertainty due to the form factors is minimal [103]. Within the SM4, the normalized FB-asymmetry in B → K ∗ ℓ $^{+}$ℓ − is given by [103] A$_{FB}$ ( z ) = − G 2 $_{F}$α $^{2}$m4 B 2 $^{8}$π$^{5}$( d Γ /dz ) | V ∗ $_{ts}$V$_{tb}$ | $^{2}$zλ ( 1 − 4 ˆ m 2 l z ) × [ Re( C tot 9 C $^{tot}$∗ 10 ) V A$_{1}$ + ˆ m$_{b}$ z Re( C tot 7 C $^{tot}$∗ 10 ) { V T$_{2}$ (1 − ˆ m$_{K}$ ∗ ) + A$_{1}$T$_{1}$ (1 + ˆ m$_{K}$ ∗ ) } ] , (80)