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Pionium in the elementary particle decays

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Published Article
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arXiv ID: hep-ph/9411382
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arXiv
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Abstract

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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