Decay rho(0)->pi(+)+pi(-)+gamma and the coupling constant g(rho sigma gamma)

Gokalp, A
Yılmaz, Osman
The experimental branching ratio for the radiative decay rho (0)-pi (+) + pi (-) + gamma is used to estimate the coupling constant g(rho sigma gamma) for a set of values of sigma -meson parameters M-sigma and Gamma (sigma). Our results are quite different than the values of this constant used in the literature.


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The strong coupling constants of negative parity heavy baryons belonging to sextet and antitriplet representations of SUf(3) with light pi and K mesons are estimated within the light cone QCD sum rules. It is observed that each class of the sextet-sextet, sextet-antitriplet, and antitriplet-antitriplet transitions can be described by only one corresponding function. The pollution arising from the positive to positive, positive to negative, and negative to positive parity baryons transitions is eliminated by...
Citation Formats
A. Gokalp and O. Yılmaz, “Decay rho(0)->pi(+)+pi(-)+gamma and the coupling constant g(rho sigma gamma),” PHYSICAL REVIEW D, pp. 0–0, 2000, Accessed: 00, 2020. [Online]. Available: