Analysis of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons in proton-proton collisions √s = 13 TeV
Fecha
2022Materia
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 ...
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. ...
En
The journal of high energy physics. Trieste. No. 6 (June 2022), 012, 67 p.
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