We derive expressions for the decay constants of S wave pseudoscalar and vector quarkonium (QQ̄) states through approximating the quark model definition by including terms upto k2/c2. Using the derived formula, the decays constants for ground and excited states are calculated. Our predictions are found to be in good agreement with the available experimental and lattice results.
|Number of pages||13|
|Journal||International Journal of Theoretical Physics|
|Publication status||Published - 01-07-2020|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)