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arXiv · 1412.5246

Two-Photon Total Annihilation of Molecular Positronium

Jesús Pérez-Ríos·Sherwin T. Love·Chris H. Greene
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Abstract

The rate for complete two-photon annihilation of molecular positronium Ps$_{2}$ is reported. This decay channel involves a four-body collision among the fermions forming Ps$_{2}$, and two photons of 1.022 MeV, each, as the final state. The quantum electrodynamics result for the rate of this process is found to be $\Gamma_{Ps_{2} \rightarrow \gamma\gamma}$ = 9.0 $\times 10^{-12}$ s$^{-1}$. This decay channel completes the most comprehensive decay chart for Ps$_{2}$ up to date.

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Jesús Pérez-Ríos, Sherwin T. Love, Chris H. Greene. 2014-12-17. Two-Photon Total Annihilation of Molecular Positronium. https://doi.org/10.1209/0295-5075%2F109%2F63002

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