Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/87826
Título: | Measurement of the CP properties of Higgs boson interactions with τ-leptons with the ATLAS detector |
Autor(es): | Castro, Nuno Filipe Onofre, A. ATLAS Collaboration |
Data: | 2023 |
Editora: | Springer |
Revista: | The European Physical Journal C: Particles and Fields |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Collaboration, A. (2023). Measurement of the CP properties of Higgs boson interactions with τ-leptons with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 83(7). doi: 10.1140/epjc/s10052-023-11583-y |
Resumo(s): | A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and τ -leptons is presented. The study is based on a measurement of CP-sensitive angular observables defined by the visible decay products of τ -leptons produced in Higgs boson decays. The analysis uses 139 fb−1 of proton–proton collision data recorded at a centre-of-mass energy of √s = 13 TeV with the ATLAS detector at the Large Hadron Collider. Contributions from CP-violating interactions between the Higgs boson and τ -leptons are described by a single mixing angle parameter φτ in the generalised Yukawa interac tion. Without constraining the H → τ τ signal strength to its expected value under the Standard Model hypothesis, the mixing angle φτ is measured to be 9◦±16◦, with an expected value of 0◦ ± 28◦ at the 68% confidence level. The pure CP-odd hypothesis is disfavoured at a level of 3.4 standard deviations. The results are compatible with the predictions for the Higgs boson in the Standard Model. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/87826 |
DOI: | 10.1140/epjc/s10052-023-11583-y |
ISSN: | 1434-6044 |
e-ISSN: | 1434-6052 |
Versão da editora: | https://link.springer.com/article/10.1140/epjc/s10052-023-11583-y |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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s10052-023-11583-y.pdf | 4,97 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons