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arXiv 0711.3018hep-ph
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Higgs自耦合对电弱相变的探测

Higgs Self-Coupling as a Probe of Electroweak Phase Transition

Andrew Noble, Maxim Perelstein

摘要:

我们认为,在一个广泛的标准模型的扩展类,有一个紧密corellation之间的动态的电弱相变和立方自耦合的希格斯玻色子:模型表现出强大的一阶EWPT预测的希格斯自耦合的大偏差从标准模型的预测,只要没有意外取消发生。一阶偏差是典型的。如果所提出的光度或能量升级得以实现,这种转变将在大型强子对撞机上观察到,以及在未来的电子-正电子对撞机,如拟议的国际线性对撞机。这些测量将提供一个实验室测试的动态电弱相变。

英文摘要:

We argue that, within a broad class of extensions of the Standard Model, there is a tight corellation between the dynamics of the electroweak phase transition and the cubic self-coupling of the Higgs boson: Models which exhibit a strong first-order EWPT predict a large deviation of the Higgs self-coupling from the Standard Model prediction, as long as no accidental cancellations occur. Order-one deviations are typical. This shift would be observable at the Large Hadron Collider if the proposed luminosity or energy upgrades are realized, as well as at a future electron-positron collider such as the proposed International Linear Collider. These measurements would provide a laboratory test of the dynamics of the electroweak phase transition.

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