• R Ramanathan

      Articles written in Pramana – Journal of Physics

    • Bethe-Salpeter dynamics for two-photon processes

      A N Mitra N Nimai Singh R Ramanathan

      More Details Abstract Fulltext PDF

      Recent experimental data on single hadron production by two-photon beams inpetra andpep have provided a unique opportunity for testing specific models of confinement through a study of one of their cleanest predictionsviz the γγ →H amplitudes. Motivated by this new facility, aqcd-oriented Bethe-Salpeter model of harmonic confinement, which has already been found to describe rather well several classes of hadronic data (from mass spectra to electromagnetic and pionic couplings), is now employed for a detailed comparison of its predictions onP → γγ andT → γγ couplings with the data. The agreement is quite good for all cases except one (η → γγ).

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