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Abstract

We present a simplified model for the production of photonium in which an incident positron picks up an off-shell electron. The vertex form factor and coupling constant for one state are fixed by experimental measurements. Predictions for the production of additional states and for two-photon decay experiments are then made assuming the production vertex is the same for all states of photonium.

Photonium Access sets them free. Photonium Access allows you to access your entire Photos.app library whenever you need it. Just click the Photonium Access menubar widget to display your Photos.app library. Make the thumbnails bigger or smaller. We have shown in a previous paper that stable electron-positron resonances (“photonium”) can account for the dark matter in the universe. In this paper we show that photonium in the galaxy will be dissociated by cosmic rays. We predict the intensity of the resulting 511 keV gamma rays as a test of the model. We find that the predictions exceed observations from the galactic center for. We present a simplified model for the production of photonium in which an incident positron picks up an off-shell electron. The vertex form factor and coupling constant for one state are fixed by experimental measurements. Predictions for the production of additional states and for two-photon decay experiments are then made assuming the production vertex is the same for all states of photonium.

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References

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We thank B.N. Harmon and Z. Zuo for providing the Compton profile of thorium. We acknowledge fruitful discussions with C.J. Benesh, D. Ta Vo, W.H. Kelly and F.K. Wohn. This work was supported in part by the U.S. Department of Energy under Grant No. DE-FG02-87ER40371, Dividion of High Energy and Nuclear Physics.

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