PIRSA:08060171  ( MP4 Medium Res , MP3 , PDF ) Which Format?
The Higgs Self-Coupling as a Probe of the Electroweak Phase Transition
Speaker(s): Andrew Noble
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 electroweak phase transition 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.
Date: 06/06/2008 - 9:15 am
Collection: PASCOS 08
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