Harvey Jeffrey A, Hill Christopher T, Hill Richard J
Enrico Fermi Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA.
Phys Rev Lett. 2007 Dec 31;99(26):261601. doi: 10.1103/PhysRevLett.99.261601. Epub 2007 Dec 28.
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, approximately E(munurhosigma)omega(mu)ZnuFrhosigma. 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, similar10(9) K. These processes and related axion-photon interactions at finite baryon density appear to be relevant in many astrophysical regimes.
我们提出了基于轴矢反常的新物理过程，这些过程由将光子、Z玻色子和ω介子耦合起来的韦西-祖米诺-维滕项描述。这种相互作用采取赝陈-西蒙斯项的形式，近似为E(munurhosigma)omega(mu)ZnuFrhosigma。该项通过Z玻色子与中微子的耦合在有限重子密度下诱导中微子-光子相互作用。这些相互作用在各种实验室和天体物理领域可能是可探测的。新的相互作用可能解释费米实验室助推器中微子实验MiniBooNE观测到的过量现象。它们在温度高于约10⁹K时对中子星冷却也有相当大的贡献。这些过程以及在有限重子密度下相关的轴子-光子相互作用在许多天体物理状态中似乎都是相关的。
