Analysis of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons in proton-proton collisions at s√ = 13 TeV
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Type :
Article
Publication Status :
Published
Access :
Attribution 4.0 International
openAccess
http://creativecommons.org/licenses/by/4.0/
openAccess
http://creativecommons.org/licenses/by/4.0/
Abstract
The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons is presented. The measurement is based on data collected in proton-proton collisions at s = 13 TeV by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. The analysis uses the angular correlation between the decay planes of τ leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd τ Yukawa couplings is found to be −1 ± 19°, compared to an expected value of 0 ± 21° at the 68.3% confidence level. The data disfavour the pure CP-odd scenario at 3.0 standard deviations. The results are compatible with predictions for the standard model Higgs boson.
Source :
Journal of High Energy Physics
Date :
2022-06-03
Volume :
2022
Issue :
6
Publisher :
Springer
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