Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-11-20
Phys.Rev.D78:063518,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 6 figures; minor changes to clarify a few points
Scientific paper
10.1103/PhysRevD.78.063518
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.
Noble Andrew
Perelstein Maxim
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