ar X iv : 0 71 1 . 00 08 v 1 [ he p - ph ] 3 1 O ct 2 00 7 Alberta Thy 09 - 07 Positronium - ion decay
نویسنده
چکیده
We present a precise theoretical prediction for the decay width of the bound state of two electrons and a positron (a negative positronium ion), Γ(Ps−) = 2.087 085(12)/ns. We include O(α) effects of hard virtual photons as well as soft corrections to the wave function and the decay amplitude. An outcome of a large-scale variational calculation, this is the first result for second-order corrections to a decay of a three-particle bound state. It will be tested experimentally in the new positronium-ion facility in Garching in Germany.
منابع مشابه
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