Spectra and decay rates of bb̄ meson using Gaussian wave function

Using the Gaussian wave function mass spectra and decay rates of bb meson are investigated in the framework of phenomenological quark anti-quark potential (coulomb plus power) model consisting of relativistic corrections to the kinetic energy term. The spin-spin, spin-orbit and tensor interactions are employed to obtain the pseudoscalar and vector meson masses. The decay constants ( f P/V ) are computed using the wave function at the origin. The di-gamma and di-leptonic decays of the bb meson are investigated using Van-Rayan Weisskopf formula as well as in the NRQCD formalism.