Speaker
Description
With the current precision of measurements by ATLAS and CMS experiments, it cannot be excluded that a SM-like Higgs boson is a CP violating mixture of CP-even and CP-odd states. We explore this possibility here, assuming Higgs boson production in ZZ-fusion, at 1 TeV ILC, with unpolarized beams. The full reconstruction of SM background and fast reconstruction of the signal is performed, simulating 8 ab^{-1} of data collected with the ILD detector. We demonstrate that the CP mixing angle \Psi_{\mathrm{CP}} between scalar and pseudoscalar states can be measured with the statistical uncertainty of 3.8 mrad at 68\% CL, corresponding to 1.44 \cdot 10^{-5} for the CP parameter f_{\mathrm{CP}}. This is the first result on sensitivity of an e^+e^- collider to measure f_{\mathrm{CP}} in vector boson fusion, recently published in Phys. Rev. D.
Is the speaker a PhD student or post-doc? | Yes - I need some financial support (fee reduction) to attend Higgs 2024 |
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