Solving the flavour problem with hierarchical fermion wave functions

Details Solving the flavour problem with hierarchical fermion wave functions Solving the flavour problem with hierarchical fermion wave functions

2007-11-21

arxiv.org/abs/0711.3376v2

Phys.Lett.B663:73-79,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, references added, minor changes, version accepted for publication

Scientific paper

10.1016/j.physletb.2008.04.005

We investigate the flavour structure of generic extensions of the SM where quark and lepton mass hierarchies and the suppression of flavour-changing transitions originate only by the normalization constants of the fermion kinetic terms. We show that in such scenarios the contributions to quark FCNC transitions from dimension-six effective operators are sufficiently suppressed without (or with modest) fine tuning in the effective scale of new physics. The most serious challenge to this type of scenarios appears in the lepton sector, thanks to the stringent bounds on LFV. The phenomenological consequences of this scenarios in view of improved experimental data on quark and lepton FCNC transitions, and its differences with respect to the Minimal Flavour Violation hypothesis are also discussed.

Affiliated with

Also associated with

No associations

Rating

Solving the flavour problem with hierarchical fermion wave functions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solving the flavour problem with hierarchical fermion wave functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solving the flavour problem with hierarchical fermion wave functions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-414549