Radiative transition of negative to positive parity nucleon
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KünyeAzizi, K., & Sundu, H. (2015). Radiative transition of negative to positive parity nucleon. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(9), 1-12. http://dx.doi.org/10.1103/PhysRevD.91.093012
We investigate the N*(1535) -> N gamma transition in the framework of light cone QCD sum rules. In particular, using the most general form of the interpolating current for the nucleon as well as the distribution amplitudes of the photon, we calculate two transition form factors responsible for this channel and use them to evaluate the decay width and branching ratio of the transition under consideration. The result obtained for the branching fraction is in good agreement with the experimental data.