Measurement of the Higgs-boson CP properties using decays into WW and ZZ at the Photon Collider

TL;DR

This paper investigates the CP properties of the Higgs boson through decay channels into WW and ZZ at the Photon Collider, using realistic simulations to verify parity and explore different Higgs models.

Contribution

It provides a detailed analysis of Higgs CP properties at the Photon Collider, considering various models and realistic detector effects.

Findings

Parity of the SM Higgs can be verified from interference effects.

Angular correlations in decay channels reveal CP properties.

Analysis covers Higgs masses from 180 to 350 GeV.

Abstract

Higgs-boson production at the Photon Collider at TESLA is studied for masses from 180 to 350 GeV, using realistic luminosity spectra and detector simulation. Parity of the SM Higgs-boson can be verified from the measurement of the interference effects in the W+ W- decay channel and of the angular correlations in the decays of W+ W- and ZZ pairs. SM-like Two Higgs Doublet Model (2HDM II) and model with the generic higgs couplings are considered.