Yetkin, Elif Aslı2022-10-192022-10-192022-061029-8479https://hdl.handle.net/11411/4597https://doi.org/10.1007/JHEP06(2022)012Abstract: The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and ? 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 ? leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd ? 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. [Figure not available: see fulltext.] © 2022, The Author(s).eninfo:eu-repo/semantics/openAccessHadron-Hadron ScatteringHiggs PhysicsTau PhysicsArticle2-s2.0-8513211049810.1007/JHEP06(2022)012Q2WOS:000807501200001