I will present some recent results of modeling hadrons in a light-front Hamiltonian approach.
The particular model is based on light-front holographic QCD at large distance and a one-gluon
exchange at short distance. The model is solved in a basis function approach. Mass spectra
and light-front wave functions (LFWFs) for charmonia, bottomonia and Bc mesons are obtained. The
LFWFs are used to study the decay constants, elastic form factors, rms radius, distribution amplitudes
and parton distributions, which reveals rich structural information of the system. I will also comment
on the emerging paths towards ab initio light-front Hamiltonian calculations.

References:
[1] Y. Li, P. Maris, X. Zhao and J.P. Vary, Phys. Lett. B 758, 118 (2016);  [arXiv:1509.07212 [hep-ph]].
[2] Y. Li, P. Maris and J.P. Vary,  Phys. Rev. D 96, 016022 (2017); [arXiv:1704.06968 [hep-ph]].
[3] S. Leitão, Yang Li, P. Maris, M.T. Peña, A. Stadler, J.P. Vary, E.P. Biernat, Eur. Phys. J. C 77, 696 (2017); [arXiv:1705.06178 [hep-ph]].
[4] Y. Li, V.A. Karmanov, P. Maris and J.P. Vary, Phys. Lett. B 748, 278 (2015); [arXiv:1504.05233 [nucl-th]].