Positronium-ion decay
High Energy Physics - Phenomenology
2008-11-26 v1 Atomic Physics
Abstract
We present a precise theoretical prediction for the decay width of the bound state of two electrons and a positron (a negative positronium ion), Gamma(Ps^-) = 2.087 085(12)/ns. We include O(alpha^2) 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.
Cite
@article{arxiv.0711.0008,
title = {Positronium-ion decay},
author = {Mariusz Puchalski and Andrzej Czarnecki and Savely G. Karshenboim},
journal= {arXiv preprint arXiv:0711.0008},
year = {2008}
}
Comments
6 pages