A Flavor Sector for the Composite Higgs
arXiv:1206.4701 · doi:10.1016/j.physletb.2013.08.006
Abstract
We discuss flavor violation in large N Composite Higgs models. We focus on scenarios in which the masses of the standard model fermions are controlled by hierarchical mixing parameters, as in models of Partial Compositeness. We argue that a separation of scales between flavor and Higgs dynamics can be employed to parametrically suppress dipole and penguin operators, and thus effectively remove the experimental constraints arising from the lepton sector and the neutron EDM. The dominant source of flavor violation beyond the standard model is therefore controlled by 4-fermion operators, whose Wilson coefficients can be made compatible with data provided the Higgs dynamics approaches a "walking" regime in the IR. Models consistent with all flavor and electroweak data can be obtained with a new physics scale within the reach of the LHC. Explicit scenarios may be realized in a 5D framework, the new key ingredient being the introduction of flavor branes where the wave functions of the bulk fermions end.
8 pages revtex4-1 class. Version 2: references added. Version 3: minor corrections
References in corpus (6)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Probing the Randall-Sundrum geometric origin of flavor with lepton flavor violation
- Flavor Violation Tests of Warped/Composite SM in the Two-Site Approach
- Solving the flavour problem with hierarchical fermion wave functions
- A Natural Hierarchy and a low New Physics scale from a Bulk Higgs