(Dys)Zphilia or a custodial breaking Higgs at the LHC
arXiv:1205.0011 · doi:10.1007/JHEP07(2012)012
Abstract
Electroweak precision measurements established that custodial symmetry is preserved to a good accuracy in the gauge sector after electroweak symmetry breaking. However, recent LHC results might be interpreted as pointing towards Higgs couplings that do not respect such symmetry. Motivated by this possibility, we reconsider the presence of an explicitly custodial breaking coupling in a generic Higgs parameterization. After briefly commenting on the large UV sensitivity of the T parameter to such a coupling, we perform a fit to results of Higgs searches at LHC and Tevatron, and find that the apparent enhancement of the ZZ channel with respect to WW can be accommodated. Two degenerate best-fit points are present, which we label `Zphilic' and `dysZphilic' depending on the sign of the hZZ coupling. Finally we highlight some measurements at future linear colliders that may remove such degeneracy.
16 pages, 10 figures
References in corpus (11)
- Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
- The Higgs boson from an extended symmetry
- Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV
- Measuring the Higgs Sector
- Tasi 2009 lectures: The Higgs as a Composite Nambu-Goldstone Boson
- Measuring Hidden Higgs and Strongly-Interacting Higgs Scenarios
- (Non)decoupling of the Higgs triplet effects
- Higgs Triplets and Limits from Precision Measurements
- Determination of Higgs-boson couplings (SFitter)
- Measurement of the top-Higgs Yukawa coupling at a Linear e+e- Collider
- Higgs self coupling measurement
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