Anomaly mediated neutrino-photon interactions at finite baryon density

被引:73
作者
Harvey, Jeffrey A. [1 ,2 ]
Hill, Christopher T. [3 ]
Hill, Richard J. [3 ]
机构
[1] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[2] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[3] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
关键词
D O I
10.1103/PhysRevLett.99.261601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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, similar to epsilon(mu nu rho sigma)omega(mu)Z(nu)F(rho sigma). 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 excess observed at the Fermilab Booster Neutrino Experiment MiniBooNE. They also produce a competitive contribution to neutron star cooling at temperatures greater than or similar to 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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页数:4
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