A Bottom-up Approach: The Data Driven Flavour Model$${}^{\mathbf{\#}}$$

A bottom-up approach has been adopted to identify a flavour model that agrees with present experimental measurements. The charged fermion mass hierarchies suggest only the top Yukawa term should be at renormalisable level. symmetry of Lagrangian including fermionic kinetic terms and is then combination $$U(2)$$ $$U(3)$$ factors. Lighter active neutrino masses quark lepton mixings arise considering specific spurion fields. associated phenomenology investigated turns out have almost same protection minimal violation, in both sectors. Promoting spurions dynamical fields, scalar potential also studied minimum identified such are correctly reproduced.