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arxiv: 1006.0665 · v1 · pith:XUPSL7BBnew · submitted 2010-06-03 · 🪐 quant-ph

Photon correlations in positron annihilation

classification 🪐 quant-ph
keywords positronannihilationdecayfactorphotonarrivalcenterconsistent
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The two-photon positron annihilation density matrix is found to separate into a diagonal center of energy factor implying maximally entangled momenta, and a relative factor describing decay. For unknown positron injection time, the distribution of the difference in photon arrival times is a double exponential at the para-Ps decay rate, consistent with experiment (V. D. Irby, Meas. Sci. Technol. 15, 1799 (2004)).

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