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We reanalyze the decay constants of s-wave and p-wave mesons and D, B ->Mform factors, where M represents a pseudoscalar meson, a vector meson, a scalarmeson, or an axial vector meson within a covariant light-front quark model. Theparameter \beta for wave-functions of most of s-wave mesons and of a fewaxial-vector mesons are fixed with latest experimental information, whereveravailable or using the lattice calculations. The treatment of masses and mixingangles for strange axial vector mesons is improved for the purpose. We extendour analysis to determine the form factors appearing in the transition of D_s,B_s->M transitions, and to the isoscalar final state mesons. Numerical resultsof the form factors for transitions between a heavy pseudoscalar meson and ans-wave or p-wave light meson and their momentum dependence are presented indetail. Further, their sensitivity to uncertainties of beta parameters of theinitial as well as the final mesons is investigated. Some experimentalmeasurements of the charmed and bottom meson decays are employed to compare thedecay constants and transition form factors obtained in this and other works.

Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model