Light-by-light forward scattering sum rules for charmonium states
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DOI: 10.1103/physrevd.96.056003
Abstract: We apply three forward light-by-light scattering sum rules to charmonium states. We show that these sum rules imply a cancellation between charmonium bound state contributions, which are mostly known from the $\gamma \gamma$ decay widths… read more here.
Keywords: sum; sum rules; scattering sum; light light ... See more keywords