$CP$-odd form factor in the $HWW$ vertex

Abstract

We revisit the $CP$-odd form factor in the $HWW$ vertex within the Standard Model (SM), which is induced only at the one-loop level when one of the $W$ bosons is off-shell. To the best of our knowledge, the numerical evaluation of this form factor is presented for the first time. The relevant contributions from quark loops are of order $10^{-5}$, well below the current experimental sensitivity. The phenomenological implications are studied through asymmetries in unpolarized and polarized observables in three-body decays.

Accepted for publication in Physical Review D

References in corpus (16)

• 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
• Pinch Technique: Theory and Applications
• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• Aspects of CP violation in the HZZ coupling at the LHC
• Measuring the Higgs-Vector boson Couplings at Linear $e^{+}{e}^{-}$ Collider
• New Observables for CP Violation in Higgs Decays
• Role of polarization in probing anomalous gauge interactions of the Higgs boson
• Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at $\sqrt{s}=$ 8 TeV
• CP-violating HWW couplings at the Large Hadron Collider
• Use of transverse beam polarization to probe anomalous VVH interactions at a Linear Collider
• Contributions to $ZZ{V}^{\ast }$ ($V=\gamma ,Z,Z^{\prime }$) couplings from $CP$ violating flavor changing couplings
• Polarisations of the $Z$ and $W$ bosons in the processes $pp\to ZH$ and $pp\to W_{}^{\pm }H$
• Anomalous Higgs Couplings at an $e\gamma$ Collider
• Parametrisation and dictionary for CP violating Higgs boson interactions
• Searching for HWW Anomalous Couplings with Simulation-Based Inference