CP Violation in γγ → W + W − with Polarized Photon Beams

CP Violation in γγ → W + W − with Polarized Photon

Probing Higgs-sector Cp Violation at a Photon Collider

The two-photon collision option of the International Linear ee Collider (ILC), a photon linear collider (PLC), is using back-scattered laser photons off the incident electrons and/or positrons. 1,2 A photon collider provides unique capabilities for probing new physics appearing in neutral spin-zero particles such as neutral Higgs bosons in the Standard Model (SM) and its Minimal Supersymmetric ...

Probing the CP of the Higgs at a γγ collider using γγ → tt̄ → lX

Probing the CP of the Higgs at a γγ collider using γγ → t ¯ t → lX. ABSTRACT We present results of an investigation to study CP violation in the Higgs sector in t ¯ t production at a γγ-collider. This is done in a model independent way in terms of six form-factors {ℜ(S γ), ℑ(S γ), ℜ(P γ), ℑ(P γ), S t , P t } which parameterize the CP mixing in Higgs sector. The angular distribution of the decay...

CP property of the Higgs at the γγ colliders using tt̄ production

CP property of the Higgs at the γγ colliders using t ¯ t production. ABSTRACT We present results of an investigation to study CP violation in the Higgs sector in t ¯ t production at a γγ-collider, via the process γγ → φ → t ¯ t where the φ is a scalar with indeterminate CP parity. The study is performed in a model independent way parametrising the CP violating couplings in terms of six form fac...

Measuring the Higgs CP property at a Photon Linear Collider

We study measurement of the CP property of the Higgs boson at a photon linear collider. One method where we take advantage of interference between Higgs-production and background amplitudes is proposed. A broad peak of the photon energy spectrum is helpful in observing the energy dependence of the interference effects. Numerical results for the process γγ → tt are shown as an example. In the St...