Properties of Charmonium States in a Phenomenological Approach |
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| Authors: | Praveen P D'Souza Antony Prakash Monteiro K. B. Vijaya Kumar |
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| Affiliation: | 1. Department of Physics, St Philomena College, Darbe, Puttur 574 202, India;2. Department of Physics, Mangalore University, Mangalagangothri P. O., Mangalore 574 199, India |
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| Abstract: | ![]()
We investigate the spectrum and decay rates of charmonium states within the framework of the non relativistic quark model by employing a Coulomb like potential from the perturbative one gluon exchange and the linear confining potential along with the potential derived from instanton vacuum to account for the hyperfine mass splitting of charmonium states in variational approach. We predict radiative E1, M1, two-photon, lepton and two-gluon decay rates of low lying charmonium states. An overall agreement is obtained with the experimental masses and decay widths.We have estimated the branching ratio of two gluons decaying into light hadrons. |
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| Keywords: | non-relativistic quark model instantons charmonium radiative decay two gluon decay two photon decay leptonic decay branching ratio |
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