New Higgs interactions and recent data from the LHC and the Tevatron

Abstract

We perform a multi-parameter global analysis of all data available till date from the ATLAS, CMS and Tevatron experiments, on the signals of a Higgs boson, to investigate how much scope exists for departure from the standard model prediction. We adopt a very general and model-independent scenario, where separate deviations from standard model values are possible for couplings of the observed scalar with up-and down-type fermions, W-and Z-boson pairs, as well as gluon and photon pair effective interactions. An arbitrary phase in the coupling with the top-pair, and the provision for an invisible decay width for the scalar are also introduced. After performing a global fit with seven parameters, we find that their values at 95% confidence level can be considerably different from standard model expectations. Moreover, rather striking implications of the phase in top-quark coupling are noticed. We also note that the invisible branching ratio can be sizeable, especially when the couplings of the Higgs to W-and Z-pairs are allowed to be different.

18 pages, 4 figures; v2: minor additions to text

References in corpus (8)

• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Search for the Standard Model Higgs boson in the diphoton decay channel with 4.9 fb-1 of pp collisions at sqrt(s) = 7 TeV with ATLAS
• Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV
• Measuring the Higgs Sector
• Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collision data at sqrt(s) = 7 TeV with ATLAS
• Search for the standard model Higgs boson decaying to a W pair in the fully leptonic final state in pp collisions at sqrt(s) = 7 TeV
• Search for the standard model Higgs boson in the decay channel H to ZZ to 4 leptons in pp collisions at sqrt(s) = 7 TeV
• Addendum to: Predictions for Higgs production at the Tevatron and the associated uncertainties

Cited by in corpus (13)

• Complete Higgs Sector Constraints on Dimension-6 Operators
• Constraining extra-fermion(s) from the Higgs boson data
• Confronting Higgcision with Electric Dipole Moments
• Coupling spans of the Higgs-like boson
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• LHC Higgs Signatures from Extended Electroweak Gauge Symmetry
• CP violation with a dynamical Higgs
• High-scale validity of a two-Higgs doublet scenario: a study including LHC data
• Dark matter, neutrino masses and high scale validity of an inert Higgs doublet model
• Jet Vetoes Interfering with H->WW
• Spin-2 Resonances in Vector-Boson-Fusion Processes at NLO QCD
• Exploration of the Tensor Structure of the Higgs Boson Coupling to Weak Bosons in $e^{+}{e}^{-}$ Collisions
• Including the Z in an Effective Field Theory for dark matter at the LHC