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Scouring meson decays for true muonium

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Ji, Yao ; Lamm, Henry
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 06 Apr 2021 14:34


Rare meson decay experiments promise to measure branching ratios as small as 10−13. This presents an opportunity to discover the μ+μ− bound state true muonium. We consider a set of possible channels, all with branching ratios above ∼10−11. For the electromagnetic decays η/η′→(μ+μ−)γ, theoretical and phenomenological form factors Fη/η′γγ∗(Q2) allow predictions of BR(η′→(μ+μ−)γ)∼4.8×10−10 and ...


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