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Two-photon, Two-gluon and Radiative Decays of Heavy Flavoured Mesons by Arpit Parmar; Bhavin Patel; P.C. Vinodkumar is a Physics and Astronomy article available to read on EtoBox.

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Here we present the two-photon and two-gluon decay widths of the S-wave (η Q∈c,b ) and P-wave (χ Q∈c,bJ ) charmonium and bottonium states and the radiative transition decay widths of c c, b b and c b systems based on Coulomb plus power form of the inter-quark potential (CPP ν ) with exponent ν. The Schrödinger equation is solved numerically for different choices of the exponent ν. We employ the masses of different states and their radial wave functions obtained from the study to compute the two-photon and two-gluon decay widths and the E1 and M1 radiative transitions. It is found that the quarkonia mass spectra and the E1 transition can be described by the same interquark model potential of the CPP ν with ν = 1.0 for c c and ν = 0.7 for b b systems, while the M1 transition (at which the spin of the system changes) and the decay rates in the annihilation channel of quarkonia are better estimated by a shallow potential with ν < 1.0.

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Author

Arpit Parmar; Bhavin Patel; P.C. Vinodkumar

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0375-9474)

Published

2010

Language

EN

Field

Physics and Astronomy (Physical Sciences)