6533b823fe1ef96bd127ee0b
RESEARCH PRODUCT
Negative S parameter from holographic technicolor.
Veronica SanzJohannes Hirnsubject
PhysicsHigh Energy Physics::PhenomenologyGeneral Physics and AstronomyDuality (optimization)Boundary (topology)FOS: Physical sciencesTechnicolorFermionDual (category theory)Theoretical physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Dimension (vector space)Quantum mechanicsElectroweak scaleSign (mathematics)description
We present a new class of 5D models, Holographic Technicolor, which fulfills the basic requirements for a candidate of comprehensible 4D strong dynamics at the electroweak scale. It is the first Technicolor-like model able to provide a vanishing or even negative tree-level S parameter, avoiding any no-go theorem on its sign. The model is described in the large-N regime. S is therefore computable: possible corrections coming from boundary terms follow the 1/N suppression, and generation of fermion masses and the S parameter issue do split up. We investigate the model's 4D dual, probably walking Technicolor-like with a large anomalous dimension.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-06-08 | Physical review letters |