Possible Explanation for $E > 10^{20}$ eV Air Showers with Flavour-Changing Neutral Currents

Details Possible Explanation for $E > 10^{20}$ eV Air Showers with Flavour-Changing Neutral Currents Possible Explanation for $E > 10^{20}$ eV Air Showers with Flavour-Changing Neutral Currents

1997-05-29

arxiv.org/abs/hep-ph/9705463v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, Latex, no figures

Scientific paper

Air showers observed with $E > 10^{20}$ eV pose a problem since protons at such energies cannot survive a long journey through the 2.7 K microwave background. It is suggested that they are initiated instead by neutrinos which become strongly interacting through exchanges of gauge bosons associated with generation-changing neutral currents, a suggestion which is supported by calculations in a dualized standard model recently proposed. In turn, the suggestion bounds the mass of the gauge bosons and gives estimates for the branching ratios of FCNC s, c, b, and t meson decays which are accessible to experiments now being planned.

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