Abstract
AbstractWe derive expressions for the decay constants of S wave pseudoscalar and vector quarkonium ($Q\bar {Q}$
Q
Q
̄
) 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.
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),General Mathematics
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