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arXiv 1804.04852hep-phhep-th
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再讲一遍希格斯粒子衰变为两个光子

Once more on the Higgs decay into two photons

J. Gegelia, Ulf-G. Meißner

摘要:

我们评论最近重申的说法,W-玻色子环的希格斯玻色子衰变成两个光子的贡献导致不同的表达式在$R_ξ$规范和幺正规范。通过应用规范对称性保持正则化高阶协变导数,我们再次重现“经典”规范无关的结果。

英文摘要:

We comment on the recently reiterated claim that the contribution of the W-boson loop to the Higgs boson decay into two photons leads to different expressions in the $R_ξ$ gauge and the unitary gauge. By applying a gauge-symmetry preserving regularization with higher-order covariant derivatives we reproduce once again the "classical" gauge-independent result.

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