Constraints on the SU(3) Electroweak Model

Details Constraints on the SU(3) Electroweak Model Constraints on the SU(3) Electroweak Model

2002-04-10

arxiv.org/abs/hep-ph/0204109v1

Phys.Rev.D66:075008,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LaTeX, 4 figures embedded, uses JHEP.cls

Scientific paper

10.1103/PhysRevD.66.075008

We consider a recent proposal by Dimopoulos and Kaplan to embed the electroweak SU(2)_L X U(1)_Y into a larger group SU(3)_W X SU(2) X U(1) at a scale above a TeV. This idea is motivated by the prediction for the weak mixing angle sin^2 theta_W = 1/4, which naturally appears in these models so long as the gauge couplings of the high energy SU(2) and U(1) groups are moderately large. The extended gauge dynamics results in new effective operators that contribute to four-fermion interactions and Z pole observables. We calculate the corrections to these electroweak precision observables and carry out a global fit of the new physics to the data. For SU(2) and U(1) gauge couplings larger than 1, we find that the 95% C.L. lower bound on the matching (heavy gauge boson mass) scale is 11 TeV. We comment on the fine-tuning of the high energy gauge couplings needed to allow matching scales above our bounds. The remnants of SU(3)_W breaking include multi-TeV SU(2)_L doublets with electric charge (+-2,+-1). The lightest charged gauge boson is stable, leading to cosmological difficulties.

Affiliated with

Also associated with

No associations

Rating

Constraints on the SU(3) Electroweak Model 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 Constraints on the SU(3) Electroweak Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on the SU(3) Electroweak Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-40229