Constraints on Fermion Magnetic and Electric Moments from LEP-I
The effective Lagrangian approach allows us to constrain fermion magnetic and electric moments using LEP-I data. We improve some of the previous limits on these moments.
hep-ph↗
arXiv subjects
E. Massó
Publications and source records attributed to E. Massó.
The $π^0\to e^+e^-$ and $η\to μ^+ μ^-$ Decays Revisited
The rare $π^0 \to e^+e^-$ and $η\to μ^+μ^-$ 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 $B(π^0 \to e^+e^-) = (6.41 \pm 0.19)\times 10^{-8}$ and $B(η\to μ^+μ^-) = (1.14 +0.06 -0.03) \times 10^{-5}$ in agreement with recent experimental data.
hep-ph↗