Help us make Indico better by taking this survey! Aidez-nous à améliorer Indico en répondant à ce sondage !

Nov 4 – 8, 2024
Uppsala University Main Building
Europe/Stockholm timezone

Probing CPV mixing in the Higgs sector in VBF at 1 TeV ILC

Nov 5, 2024, 4:00 PM
20m
Uppsala University Main Building

Uppsala University Main Building

Biskopsgatan 3 75310 Uppsala Sweden
Higgs physics at future colliders Higgs physics at future colliders 2 - sal IV

Speaker

Ms Natasa Vukasinovic (Vinca Institute of Nuclear Sciences)

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

Primary author

Ms Natasa Vukasinovic (Vinca Institute of Nuclear Sciences)

Co-authors

Prof. Ivanka Bozovic-Jelisavcic (VINCA Institute of Nuclear Sciences, University of Belgrade) Dr Ivan Smiljanic (VINCA Institute of Nuclear Sciences, University of Belgrade) Dr Goran Kacarevic (VINCA Institute of Nuclear Sciences, University of Belgrade) Ms Ivana Vidakovic (VINCA Institute of Nuclear Sciences, University of Belgrade)

Presentation materials

There are no materials yet.