带标量/伪标量耦合的磁场与电场中光子传播：一种新视角
摘要
我们考虑两个光子与中性标量和伪标量场的最小耦合，例如在希格斯玻色子和阿尔法子的情况下。在此框架下，我们分析了在静态均匀外部磁场和电场中的光子色散关系，考虑了标量/伪标量自能虚部的贡献。我们表明，当该贡献与光子-标量/伪标量混合项大小相当时，该贡献不能被忽略。除了通常的类光子传播模式外，若外部场超过特定临界值，还可诱导一个质量约为耦合玻色子质量的大质量模式。 Depending on the values of the external field, photon energy, and the mass of the scalar/pseudoscalar particle, the scalar/pseudoscalar width could induce a sizeable rate of photon splitting in two photons due to a strong resonant phenomenon. This effect has no practical laboratory applications for the Higgs physics due to the very large critical external magnetic or electric fields involved, for a photon energy of the order of a TeV. However, it can have relevant consequences in the axion physics or in any other scenario where light neutral scalar/pseudoscalar fields have minimal coupling with two photons.
引用
@article{arxiv.hep-ph/0604143,
title = {Photon propagation in magnetic and electric fields with scalar/pseudoscalar couplings: a new look},
author = {E. Gabrielli and K. Huitu and S. Roy},
journal= {arXiv preprint arXiv:hep-ph/0604143},
year = {2008}
}
备注
40 pages, LaTeX, 5.eps Figures, new appendix and results included, misprints corrected, conclusions unchanged. Version to appear on Phys. Rev. D