Browsing by Author "Gucho, Abebe"

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    Radiative Decay Constant of Pion in Bethe-Salpeter Framework
    (Addis Ababa University, 2009-06) Gucho, Abebe; S. Bhatnagar(Professor)
    In this work our purpose is to calculate the pion radiative decay constant using the formulation of Bethe-Salpeter equation under covariant Instantaneous Ansatz(CIA) after inclusion of both leading(LO) as well as next-to-leading(NLO) terms in the BS wave function of the pion. In this process we also calculate the pion Bethe-Salpeter Normalizer which is an extremely lengthy calculation