Electroweak baryogenesis and quantum corrections to the triple Higgs boson coupling
Electroweak baryogenesis and quantum corrections to the triple Higgs boson coupling
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DOI：
10.1016/j.physletb.2004.12.004
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发表时间：
2004-11
影响因子：
4.4
通讯作者：
S. Kanemura;Y. Okada;E. Senaha
中科院分区：
文献类型：
--
作者：
S. Kanemura;Y. Okada;E. Senaha
结合希格斯物理学研究了电弱重子发生的一个现象学结果。在双希格斯双重态模型中，由于额外希格斯玻色子的作用，一阶相变可以强到足以允许电弱重子发生。我们研究了在这种情况下对最轻希格斯玻色子三重耦合的量子修正，发现强一阶相变的条件必然导致与标准模型预测至少有10%的偏差。这种偏差的大小可以在未来的e+e−线性对撞机实验中识别出来。我们还讨论了最小超对称标准模型与光停止场景，并指出一个相当大的修正出现在三重耦合成功的电弱重子发生。
A phenomenological consequence of electroweak baryogenesis is studied in connection with the Higgs physics. In a two Higgs doublet model, the first-order phase transition can be strong enough to allow the electroweak baryogenesis due to the effect of extra Higgs bosons. We investigate the quantum correction to the triple coupling of the lightest Higgs boson in such a scenario, and find that the condition of the strong first-order phase transition necessarily leads to the deviation of at least 10% from the Standard Model prediction. Such magnitude of the deviation can be identified in future e+e−linear collider experiments. We also discuss the minimal supersymmetric standard model with the light stop scenario, and point out that a sizable correction appears in the triple coupling for successful electroweak baryogenesis.