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Unitarity and vector meson contributions to K^+ -> pi^+ gamma gamma by D'Ambrosio, G.; Portoles, J. is a scholarly article available to read on EtoBox.

What is Unitarity and vector meson contributions to K^+ -> pi^+ gamma gamma about?

We compute the one-loop unitarity corrections O(p^6) from K^+ -> pi^+ pi^+ pi^- to K^+ -> pi^+ gamma gamma and we find they are relevant, increasing the leading order prediction for the width in a 30-40%. The contributions of local O(p^6) amplitudes, generated by vector meson exchange, are discussed in several models and we conclude that the vector resonance contribution should be negligible compared to the unitarity corrections.

Author

D'Ambrosio, G.; Portoles, J.

Published

1996

Language

EN