Light-front quark model update on mass spectrum calculations for ground state pseudoscalar and vector mesons

We present an update on our light-front quark model constrained by the variational principle for the QCD-motivated effective Hamiltonian. By smearing out the Dirac delta function in the hyperfine interaction and taking a larger harmonic oscillator basis in our trial wave function, we improved our model predictions for both mass spectra and decay constants of ground state pseudoscalar and vector mesons.