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arXiv · hep-ph/0402199

Mirror matter admixtures in K_L \to γγ

G. Sanchez-Colon·A. Garcia
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Abstract

Based on possible albeit tiny, admixtures of mirror matter in ordinary mesons we study the K_L \to γγtransition. We find that this process can be described with a small SU(3) symmetry breaking of only 3%. We also determine the eta-eta' mixing angle and the pseudoscalar decay constants. The results for these parameters are consistent with some obtained in the literature. They favor two recent determinations; one based on two analytical constraints, and another one based on next-to-leading order power corrections.

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G. Sanchez-Colon, A. Garcia. 2004-02-18. Mirror matter admixtures in K_L \to γγ. https://doi.org/10.1142/s0217732304015427

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