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SM4, the branching ratio of B$_{s}$ → l $^{+}$l − is given by 

The branching ratio of B$_{s}$ → l $^{+}$l − can be predicted with higher accuracy by correlating it with the B$_{s}$ − ¯ B$_{s}$ mixing and then considerable uncertainty due to mixing angle and f$_{B}$$_{s}$ gets removed. We have 

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where B$_{bs}$ is the “Bag-parameter” for B$_{s}$ mesons for which lattice result is given by [108], 

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however, in order to be conservative we use the value 1 . 33 ± 0 . 15 . In eq. 89 the parameter Δ ′ is defined as, 

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In fig. 7 we have shown the correlation between the branching fraction Br ( B$_{s}$ → ℓ $^{+}$ℓ − ) and CP asymmetry in B$_{s}$ → ψφ , it is clear that there are possibilities for appreciably different 

