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unscientific
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If you consider the ##\chi_0 ## with a mass of ## 3.4 GeV/c^2## meson, why doesn't it decay to a pair of charged leptons? Technically it is possible though the weak interaction (Z boson) or EM interaction, right?
Is it because it is so heavily suppressed because the strong interactions are favoured? For example production of ##D+D-## mesons.
Is it because it is so heavily suppressed because the strong interactions are favoured? For example production of ##D+D-## mesons.