What precision electroweak physics says about thelittle Higgs model
- 2 June 2004
- journal article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 69 (11)
- https://doi.org/10.1103/physrevd.69.115008
Abstract
We study precision electroweak constraints on the close cousin of the Littlest Higgs, the SU(6)/Sp(6) model. We identify a near-oblique limit in which the heavy W' and B' decouple from the light fermions, and then calculate oblique corrections, including one-loop contributions from the extended top sector and the two Higgs doublets. We find regions of parameter space that give acceptably small precision electroweak corrections and only mild fine tuning in the Higgs potential, and also find that the mass of the lightest Higgs boson is relatively unconstrained by precision electroweak data. The fermions from the extended top sector can be as light as 1 TeV, and the W' can be as light as 1.8 TeV. We include an independent breaking scale for the B', which can still have a mass as low as a few hundred GeV.Comment: 52 pages, 16 figureKeywords
All Related Versions
This publication has 19 references indexed in Scilit:
- Constraining the littlest HiggsJournal of High Energy Physics, 2003
- The little Higgs from a simple groupJournal of High Energy Physics, 2003
- Big corrections from a little HiggsPhysical Review D, 2003
- Physics beyond the standard model (Theory): Introducing the Little HiggsNuclear Physics B - Proceedings Supplements, 2003
- Little Higgs bosons from an antisymmetric condensatePhysical Review D, 2002
- Flavor physics and fine-tuning in theory spacePhysical Review D, 2002
- Mooses, Topology and HiggsJournal of High Energy Physics, 2002
- The Minimal Moose for a Little HiggsJournal of High Energy Physics, 2002
- The Littlest HiggsJournal of High Energy Physics, 2002
- Electroweak symmetry breaking from dimensional deconstructionPhysics Letters B, 2001