| Issue |
EPL
Volume 109, Number 6, March 2015
|
|
|---|---|---|
| Article Number | 63002 | |
| Number of page(s) | 4 | |
| Section | Atomic, Molecular and Optical Physics | |
| DOI | https://doi.org/10.1209/0295-5075/109/63002 | |
| Published online | 25 May 2015 | |
Two-photon total annihilation of molecular positronium
Department of Physics and Astronomy, Purdue University - 47907 West Lafayette, IN, USA
Received: 17 December 2014
Accepted: 18 March 2015
The rate for complete two-photon annihilation of molecular positronium Ps2 is reported. This decay channel involves a four-body collision among the fermions forming Ps2, 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 
. This decay channel completes the most comprehensive decay chart for Ps2 up to date.
PACS: 36.10.Dr – Positronium / 36.10.-k – Exotic atoms and molecules (containing mesons, antiprotons and other unusual particles)
© EPLA, 2015
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