Flavor Physics and Fine-Tuning in Theory Space

Details Flavor Physics and Fine-Tuning in Theory Space Flavor Physics and Fine-Tuning in Theory Space

2002-04-16

arxiv.org/abs/hep-ph/0204193v3

Phys.Rev. D66 (2002) 035008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, two eps figures included. Minor revisions and added references

Scientific paper

10.1103/PhysRevD.66.035008

Recently a new class of composite Higgs models have been developed which give rise to naturally light Higgs bosons without supersymmetry. Based on the chiral symmetries of ``theory space,'' involving replicated gauge groups and appropriate gauge symmetry breaking patterns, these models allow the scale of the underlying strong dynamics giving rise to the composite particles to be as large as of order 10 TeV, without any fine tuning to prevent large corrections to Higgs boson mass(es) of order 100 GeV. In this note we show that the size of flavor violating interactions arising generically from underlying flavor dynamics constrain the scale of the Higgs boson compositeness to be greater than of order 75 TeV, implying that significant fine-tuning is required. Without fine-tuning, the low-energy structure of the composite Higgs model alone is not sufficient to eliminate potential problems with flavor-changing neutral currents or excessive CP violation; solving those problems requires additional information or assumptions about the symmetries of the underlying flavor or strong dynamics. We also consider the weaker, but more model-independent, bounds which arise from limits on weak isospin violation.

Affiliated with

Also associated with

No associations

Rating

Flavor Physics and Fine-Tuning in Theory Space 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 Flavor Physics and Fine-Tuning in Theory Space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flavor Physics and Fine-Tuning in Theory Space will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-11243