Measuring the Higgs CP property at a Photon Linear Collider

Abstract

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 $\gamma \gamma \to t\bar{t}$ are shown as an example.

Comments: 4 pages, 1 PS figure. Talk given at the Linear Collider Workshop 2000, Fermilab, Oct. 24 - 28, 2000