Decay constant and leptonic decay of 𝐷𝑠 meson

Decay properties of Ds meson are studied in nonrelativistic quark-antiquark Cornell potential model with additional spin-spin interaction term. The mass spectra is computed by numerically solving Schrödinger equation with the help of three parameters viz. quark masses, confinement strength and spin dependent term. For computation of masses of excited state, spin-spin, spinorbit and tensor terms of confined one gluon exchange potential is added as a perturbation. Using potential parameters and numerical wave functions, we compute the leptonic decay constants and corresponding leptonic branching fractions. The computed results of decay constant and leptonic decay for Ds meson are in good agreements with the experimental and other theoretical approaches.