Constraining Walking and Custodial Technicolor

Details Constraining Walking and Custodial Technicolor Constraining Walking and Custodial Technicolor

2007-12-12

arxiv.org/abs/0712.1948v1

Phys.Rev.D77:097702,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Two columns, RevTex, 4 pages, 5 eps files

Scientific paper

10.1103/PhysRevD.77.097702

We show how to constrain the physical spectrum of walking technicolor models via precision measurements and modified Weinberg sum rules. We also study models possessing a custodial symmetry for the S parameter at the effective Lagrangian level - custodial technicolor - and argue that these models cannot emerge from walking type dynamics. We suggest that it is possible to have a very light spin-one axial vector boson. However, in the walking dynamics the associated vector boson is heavy while it is degenerate with the axial in custodial technicolor.

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