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arXiv 0908.3728hep-ph
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在最小331模型中衰减Z --> g g gamma和Z-prime --> g g gamma

Decays Z --> g g gamma and Z-prime --> g g gamma in the minimal 331 model

A. Flores-Tlalpa, J. Montano, F. Ramirez-Zavaleta, J. J. Toscano

备注：
5 pages, 2 figures
发表信息：
Phys.Rev.D80:077301,2009
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摘要：

在最小331模型下研究了单圈诱导的Z -> gg γ和Z-素数-> gg γ衰变，该模型预言了新的规范玻色子和三个奇异夸克的存在.发现Z -> gg γ衰变对奇异夸克的存在不敏感，因为它基本上由前两族已知夸克控制。对于Z质-> g g γ衰变，奇异夸克的贡献占主导地位，对于重Z质玻色子，奇异夸克的贡献导致γ（Z质-> g g γ）比γ（Z质-> g g g）大一个数量级以上.

英文摘要：

The one-loop induced Z --> g g gamma and Z-prime --> g g gamma decays are studied within the context of the minimal 331 model, which predicts the existence of new gauge bosons and three exotic quarks. It is found that the Z --> g g gamma decay is insensitive to the presence of the exotic quarks, as it is essentially governed by the first two families of known quarks. As to the Z-prime --> g g gamma decay, it is found that the exotic quark contribution dominates and that for a heavy Z-prime boson it leads to a Gamma(Z-prime --> g g gamma) that is more than one order of magnitude larger than that associated with Gamma(Z-prime --> g g g).

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