The $π^0\to e^+e^-$ and $η\to μ^+ μ^-$ Decays Revisited

Details The $π^0\to e^+e^-$ and $η\to μ^+ μ^-$ Decays Revisited The $π^0\to e^+e^-$ and $η\to μ^+ μ^-$ Decays Revisited

1993-02-24

arxiv.org/abs/hep-ph/9302304v2

Phys.Rev. D48 (1993) 3388-3391

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LATEX (revised version for recent experimental data)

Scientific paper

10.1103/PhysRevD.48.3388

The rare $\pi^0 \to e^+e^-$ and $\eta \to \mu^+\mu^-$ decays are calculated in different schemes, which are seen to be essentially equivalent to and produce the same results as conventional Vector-Meson Dominance. We obtain the theoretical predictions $B(\pi^0 \to e^+e^-) = (6.41 \pm 0.19)\times 10^{-8}$ and $B(\eta \to \mu^+\mu^-) = (1.14 +0.06 -0.03) \times 10^{-5}$ in agreement with recent experimental data.

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