In this paper the dynamical spin effects of the light-front holographic wave functions for light pseudoscalar mesons are studied. These improved wave functions are then confronted with a number of hadronic observables: the decay constants of π and K mesons, their ξ-moments, the pion-to-photon transition form factor, and the pure annihilation B¯s→π+π− and B¯d→K+K− decays. Taking fπ, fK, and their ratio fK/fπ as constraints, we perform a χ2 analysis for the holographic parameters, including the mass scale parameter λ and the effecti...
