Research PapersNo Access
TWO PHOTON DECAYS OF PION IN BETHE–SALPETER FRAMEWORK WITH GENERALIZED STRUCTURE OF HADRON-QUARK VERTEX
https://doi.org/10.1142/S0218301308009835Cited by:0 (Source: Crossref)
Abstract
Two photon decays of pion are studied in the framework of the Bethe–Salpeter equation under Covariant Instantaneous Ansatz where the structure of hadron-quark vertex function Γ is generalized to include various Dirac covariants (other than γ5) from their complete set. These covariants are incorporated in accordance with a power counting rule (which was recently employed to calculate leptonic decays constants of pseudoscalar mesons and vector mesons) order by order in powers of the inverse of the meson mass. Pion-photon coupling constant Fπ is calculated with the incorporation of leading order covariants.
Keywords:
PACS: 11.10.St, 12.39.Ki, 13.20.-v, 13.20.Jf
| You currently do not have access to the full text article. |
|---|
