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Witten, Nucl

6 Pith papers cite this work. Polarity classification is still indexing.

6 Pith papers citing it

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Improved Standard-Model predictions for $\eta^{(\prime)}\to \ell^+ \ell^-$

hep-ph · 2025-12-15 · accept · novelty 5.0

Updated SM predictions yield Br(η→e⁺e⁻)=5.37(4)(2)[4]×10⁻⁹, Br(η→μ⁺μ⁻)=4.54(4)(2)[4]×10⁻⁶, Br(η'→e⁺e⁻)=1.80(2)(3)[3]×10⁻¹⁰, and Br(η'→μ⁺μ⁻)=1.22(2)(2)[3]×10⁻⁷, with a mild 1.6σ tension in the η→μ⁺μ⁻ channel.

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