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arXiv · 0711.3018

Higgs Self-Coupling as a Probe of Electroweak Phase Transition

Andrew Noble·Maxim Perelstein
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Abstract

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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Andrew Noble, Maxim Perelstein. 2008-06-11. Higgs Self-Coupling as a Probe of Electroweak Phase Transition. https://doi.org/10.1103/physrevd.78.063518

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