A natural hierarchy and a low new physics scale from a bulk Higgs

作者：Vecchi Luca^*

来源：The Journal of High Energy Physics, 2011, 2011(11): 102.

DOI：10.1007/JHEP11(2011)102

• Beyond Standard Model
• AdS-CFT Correspondence
• Technicolor and Composite Models

We show that a bulk Higgs with a mass saturating the Breitenlohner-Freedman bound can naturally generate and stabilize an exponential hierarchy on an asymptotically AdS background provided appropriate UV boundary conditions are chosen. Such a framework is dual to a strongly coupled, large N CFT deformed by a marginally relevant Higgs mass operator. On the gravity side, the marginally relevant nature of the Higgs mass operator implies that the Higgs VEV is maximally spread in the bulk. This feature significantly decreases the lower bound on the new physics scale in models that address the SM flavor problem. In this framework the radion has a mass strictly lighter than the Kaluza-Klein scale, and the collider phenomenology resembles that of composite Higgs models.

• 出版日期2011-11