Quark Mass Matrices & Textures

Abstract

Texture speci c mass matrices provide a good example of \Bottom-Up"approach to deal with the fermion mass matrices and their implications for avour physics. In the context of quarks, we have studied the implication of \Weak Basis"transformations and the naturalness condition. Interestingly, we find that the present data related to quark mixings and masses allow us to deduce almost a unique set of viable quark mass matrices.