Pionium in the elementary particle decays
classification
✦ hep-ph
keywords
decayspioniumatomicelementaryalphabranchingcalculatedconsidered
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Some atomic decays of elementary particles with pionium ($\pi^+\pi^-$-dimesoatom) in the final state are considered. Only for K-meson atomic decays are the corresponding branching ratios big enough to make their experimental study realistic. The $O(\alpha)$ order corrections to the lifetime of pionium are also calculated.
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