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In the context of Fritzsch-like texture 4 zero Hermitian quark mass matrices,we have attempted to find an `exact' formula for sin2\beta wherein thedependence of \beta on the quark masses and the elements of the quark massmatrices is visible in a simple and clear manner. This has been achievedkeeping in mind the strong hierarchy of the quark masses and assuming the weakhierarchy amongst the elements of the mass matrices. This `exact' formularepresents a vast improvement over the leading order formula based on stronghierarchy of the elements of the mass matrices. Apart from showing thecompatibility of texture 4 zero mass matrices with the present value ofsin2\beta and other CKM parameters, we find interesting conclusions regardingthe structural features of the mass matrices.

Implications of CP asymmetry parameter sin2beta on structural features of texture specific mass matrices