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arXiv · 0708.1281

Anomaly mediated neutrino-photon interactions at finite baryon density

Jeffrey A. Harvey·Christopher T. Hill·Richard J. Hill
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Abstract

We propose new physical processes based on the axial vector anomaly and described by the Wess-Zumino-Witten term that couples the photon, Z-boson, and the omega-meson. The interaction takes the form of a pseudo-Chern-Simons term, $\sim ε_{μνρσ}ω^μZ^νF^{ρσ}$. This term induces neutrino-photon interactions at finite baryon density via the coupling of the Z-boson to neutrinos. These interactions may be detectable in various laboratory and astrophysical arenas. The new interactions may account for the MiniBooNE excess. They also produce a competitive contribution to neutron star cooling at temperatures >10^9 K. These processes and related axion--photon interactions at finite baryon density appear to be relevant in many astrophysical regimes.

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Jeffrey A. Harvey, Christopher T. Hill, Richard J. Hill. 2007-08-19. Anomaly mediated neutrino-photon interactions at finite baryon density. https://doi.org/10.1103/physrevlett.99.261601

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