Ultraviolet divergences of flavor changing amplitudes in the littlest Higgs model with T-parity
Ultraviolet divergences of flavor changing amplitudes in the littlest Higgs model with T-parity
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DOI：
10.1016/j.physletb.2008.11.022
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发表时间：
2008-09
影响因子：
4.4
通讯作者：
T. Goto;Y. Okada;Yasuhiro Yamamoto
中科院分区：
文献类型：
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作者：
T. Goto;Y. Okada;Yasuhiro Yamamoto
在具有 T 宇称的最小希格斯模型中研究了风味变化中性电流过程。研究发现，先前报道的 Z 玻色子风味变化过程中的对数散度完全被重费米子和 Z 玻色子的附加相互作用项的贡献所抵消。讨论了对 K→πνν́ 过程的现象学影响。
Flavor changing neutral current processes are studied in the littlest Higgs model with T-parity. It is found that the logarithmic divergence reported earlier in Z boson flavor changing processes is exactly canceled by contributions from additional interaction terms of heavy fermions and the Z boson. Phenomenological impact on the K→πνν¯ processes is discussed.