19 asymmetry in B → X$_{s}$ l $^{+}$l − is sensitive to SM4. The CP asymmetry in B → X$_{s}$ l $^{+}$l − is defined as where Br and Br represent the branching ratio of ¯ B → X$_{s}$l $^{+}$l − and its complex conjugate B → ¯ X$_{s}$l $^{+}$l − respectively. dBr/dz is given in eq. (21). The Wilson coefficients C tot 7 , C tot 9 , and C tot 10 can be written as where λ t V ∗ $_{tb}$V$_{ts}$ so that all three relevant Wilson coefficients are complex in general. The parameters ξ$_{i}$ are given by [55] Here with Li$_{2}$( z ) = − ∫ z 0 dt ln(1 − t ) t . (62) ω ( z ) = − 2 9 π 2 − 4 3 Li$_{2}$( z ) − 2 3 ln z ln(1 − z ) − 5 + 4 z 3(1 + 2 z ) ln(1 − z ) − 2 z (1 + z )(1 − 2 z ) 3(1 − z ) $^{2}$(1 + 2 z ) ln z + 5 + 9 z − 6 z 2 6(1 − z )(1 + 2 z ) , (61) ξ$_{1}$ = C$_{9}$ ( m$_{b}$ ) + 0 . 138 ω ( z ) + g ( ˆ m$_{c}$, z )(3 C$_{1}$ + C$_{2}$ + 3 C$_{3}$ + C$_{4}$ + 3 C$_{5}$ + C$_{6}$ ) − 1 2 g ( ˆ m$_{d}$, z )( C$_{3}$ + 3 C$_{4}$ ) − 1 2 g ( ˆ m$_{b}$, z )(4 C$_{3}$ + 4 C$_{4}$ + 3 C$_{5}$ + C$_{6}$ ) + 9 (3 C$_{3}$ + C$_{4}$ + 3 C$_{5}$ + C$_{6}$ ) , (59) ξ$_{2}$ = [ g ( ˆ m$_{c}$, z ) − g ( ˆ m$_{u}$, z )](3 C$_{1}$ + C$_{2}$ ) . (60) λ s tu = λ s u λ s t = V ∗ $_{ub}$V$_{us}$ V ∗ $_{tb}$V$_{ts}$ , (57) λ s tt ′ = λ s t ′ s = V ∗ t ′ $_{b}$V$_{t}$ ′ s , (58) C tot 7 = C$_{7}$ ( m$_{b}$ ) + λ s tt ′ C t ′ 7 ( m$_{b}$ ) , (54) C tot 9 = ξ$_{1}$ + λ s $_{tu}$ξ$_{2}$ + λ s tt ′ C t ′ 9 ( m$_{b}$ ) , (55) C tot 10 = C$_{10}$ ( m$_{b}$ ) + λ s tt ′ C t ′ $_{10}$( m$_{b}$ ) , (56) A$_{CP}$ ( z ) = ( dBr/dz ) − ( dBr/dz ) ( dBr/dz ) + ( dBr/dz ) = D ( z ) − D ( z ) D ( z ) + D ( z ) , (53)