Nonstandard Higgs Couplings from Angular Distributions in $h\to Z{\ell }^{+}{\ell }^{-}$

Abstract

We compute the fully differential rate for the Higgs-boson decay $h\to Z{\ell }^{+}{\ell }^{-}$, with $Z\to {\ell }^{{}^{\prime }+}{\ell }^{{}^{\prime }-}$. For these processes we assume the most general matrix elements within an effective Lagrangian framework. The electroweak chiral Lagrangian we employ assumes minimal particle content and Standard Model gauge symmetries, but is otherwise completely general. We discuss how information on new physics in the decay form factors may be obtained that is inaccessible in the dilepton-mass spectrum integrated over angular variables. The form factors are related to the coefficients of the effective Lagrangian, which are used to estimate the potential size of new-physics effects.

16 pages, 3 figures. Text unchanged, references added

References in corpus (11)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Evidence for the spin-0 nature of the Higgs boson using ATLAS data
• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• Constraining anomalous HVV interactions at proton and lepton colliders
• Tasi 2009 lectures: The Higgs as a Composite Nambu-Goldstone Boson
• New observables in the decay mode anti-B --> anti-K*0 l+ l-
• Aspects of CP violation in the HZZ coupling at the LHC
• Probing the nature of the Higgs-like Boson via h -> VF decays
• Precision studies of the Higgs boson decay channel H -> ZZ -> 4l with MEKD
• CP mixed property of the Higgs-like particle in the decay channel $h\to Z{Z}^{\ast }\to 4l$

Cited by in corpus (34)

• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• The Standard Model as an Effective Field Theory
• Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC
• The semileptonic decay Lambda_b -> Lambda_c + tau(-) + antinu_tau in the covariant confined quark model
• Effective theories of universal theories
• Higgs Decays to $ZZ$ and $Z\gamma$ in the SMEFT: an NLO analysis
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• Pseudo-observables in Higgs decays
• Fitting Higgs Data with Nonlinear Effective Theory
• Probing CP violation systematically in differential distributions
• Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology
• Anomalous Higgs couplings in angular asymmetries of H --> Zl+l- and e+e- --> HZ
• Note on Anomalous Higgs-Boson Couplings in Effective Field Theory
• Probing the Higgs Couplings to Photons in $h\to 4\ell$ at the LHC
• The $h\to 4\ell$ spectrum at low $m_{34}$: Standard Model vs. light New Physics
• On the consistent use of Constructed Observables
• Extracting Effective Higgs Couplings in the Golden Channel
• Exploring Theory Space with Monte Carlo Reweighting
• A note on Higgs decays into $Z$ boson and $J/\Psi ({\rm Y})$
• 8D Likelihood Effective Higgs Couplings Extraction Framework in the Golden Channel
• Golden Probe of Electroweak Symmetry Breaking
• Golden Probe of the Top Yukawa
• Contact Interactions in Higgs-Vector Boson Associated Production at the ILC
• Probing anomalous Higgs couplings in $H\to ZV$ decays
• Probing New Physics in Higgs Couplings to Fermions using an Angular Analysis
• Anomalies in B mesons decays: A phenomenological approach
• Lepton-mass effects in the decays $H\to Z{Z}^{\ast }\to {\ell }^{+}{\ell }^{-}{\tau }^{+}{\tau }^{-}$ and $H\to W{W}^{\ast }\to \ell \nu \tau {\nu }_{\tau }$
• A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
• Angular asymmetries as a probe for anomalous contributions to HZZ vertex at the LHC
• Electroweak bounds on Higgs pseudo-observables and $h\to 4\ell$ decays
• Adding Pseudo-Observables to the Four-Lepton Experimentalist's Toolbox
• Polarized and unpolarized off-shell $H^{\ast }\to ZZ\to 4\ell$ decay above the $2m_Z$ threshold
• The Art of Counting: a reappraisal of the HEFT expansion
• Exclusive rare Higgs decays into lepton pair and light mesons