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In pursuance of finding a viable set of mass matrices, keeping in mind recentprecision measurement of quark masses and CKM parameters, we have carried out adetailed and comprehensive analysis of hermitian texture 4 zero quark massmatrices. Our analysis reveals that only Fritzsch like texture 4 zerocombination provides a viable set of mass matrices for the present quark mixingdata and all other texture 4 zero combinations are ruled out. A good number ofthese possibilities can be ruled out analytically, the other possibilities areexcluded by the present quark mixing data. Interestingly, our conclusionsremain valid, even if in future there are perturbations in the ranges of thelight quark masses or CKM parameters.

Probing texture 4 zero quark mass matrices in the era of precision measurements