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High energy gamma rays in a region of reasonable matter density quickly produce a plethora of lower energy photons by a series of interactions, stopping when you have photons too low in energy to produce positron/electron pairs.
My question concerns the likelihood of the titular reaction (which would effectively carry the energy of photons away from a high density region). I found some very old papers discussing its likelihood in models predating the intermediate vector boson model of weak interactions. Can someone comment on the likelihood and point me at any not too advanced discussion in the context of the electro-weak theory?
[Edit: I also found good, modern, discussion of photon+<charged particle or nucleus> producing neutrino pairs. But the above, presumably less significant interaction, was not covered]
My question concerns the likelihood of the titular reaction (which would effectively carry the energy of photons away from a high density region). I found some very old papers discussing its likelihood in models predating the intermediate vector boson model of weak interactions. Can someone comment on the likelihood and point me at any not too advanced discussion in the context of the electro-weak theory?
[Edit: I also found good, modern, discussion of photon+<charged particle or nucleus> producing neutrino pairs. But the above, presumably less significant interaction, was not covered]
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