Analysis of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons in proton-proton collisions √s = 13 TeV
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 anal...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | Brasil |
| Institución: | Universidade Federal do Rio Grande do Sul (UFRGS) |
| Repositorio: | Repositório Institucional da UFRGS |
| Idioma: | inglés |
| OAI Identifier: | oai:www.lume.ufrgs.br:10183/249657 |
| Acceso en línea: | http://hdl.handle.net/10183/249657 |
| Access Level: | acceso abierto |
| Palabra clave: | Aceleradores de partículas Colisões proton-proton Leptons Hadron-hadron scattering Higgs physics Tau physics |
| Sumario: | 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. |
|---|