# Measurement of the $\textit{CP}$ structure of the Higgs-tau Yukawa coupling

### Submission summary

 As Contributors: Vinaya Krishnan Mb Arxiv Link: https://arxiv.org/abs/2203.08191v1 (pdf) Date accepted: 2022-04-06 Date submitted: 2022-03-17 01:30 Submitted by: Mb, Vinaya Krishnan Submitted to: SciPost Physics Proceedings Proceedings issue: DIS2021 Academic field: Physics Specialties: High-Energy Physics - Experiment Approach: Experimental

### Abstract

The CMS experiment at the LHC has performed the first measurement of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons. The measurement is based on data collected in proton-proton collisions at $\sqrt{s} = 13$ TeV during 2016-18, corresponding to an integrated luminosity of $137\text{ fb}^{-1}$. The analysis utilizes the angular correlation between the decay planes of tau leptons produced in Higgs boson decays, where dedicated analysis techniques are used to optimise the reconstruction of tau decay planes. The measured value of the CP mixing angle is $4\pm17^{\circ}$, at $68\%$ confidence level. The pure $\textit{CP-}$odd hypothesis is excluded by $3.2$ standard deviations. The analysis strategies and the results of the measurement are presented.

Published as SciPost Phys. Proc. 8, 008 (2022)

### List of changes

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