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The γ+γ→ν+ gn process and its implication in cosmology

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Il Nuovo Cimento (1955-1965)

Summary

We consider the γ+γ→ν + gn reaction and we make an estimate of its cross-section for the energies corresponding to the photons of the visible spectrum. We develop some argumentations about the effectiveness of the process through intergalactic space, both as regards the disappearance of the photons, as well as the production of neutrinoantineutrino pairs.

Riassunto

Abbiamo studiato la reazione γ+γ→ν+ gn per sviluppare alcune considerazioni astrofisiche. Per questo abbiamo calcolato la sezione d’urto per energie dei fotoni attorno ad l eV, limitandoci cioè ai fotoni dello spettro visibile. Abbiamo svolto alcune argomentazioni intorno all’efficienza di questo processo nello spazio intergalattico sia per quanto riguarda la perdita dei fotoni sia per ciò che si riferisce alla creazione di coppie neutrino-antineutrino.

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Authors and Affiliations

  1. Sezione di Bologna, Istituto Nationale di Fisica Nucleare, Italia

    D. Boccaletti, V. de Sabbata & C. Gualdi

Authors
  1. D. Boccaletti
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  2. V. de Sabbata
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  3. C. Gualdi
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Boccaletti, D., de Sabbata, V. & Gualdi, C. The γ+γ→ν+ gn process and its implication in cosmology. Nuovo Cim 33, 520–526 (1964). https://doi.org/10.1007/BF02750208

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  • DOI: https://doi.org/10.1007/BF02750208

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