Probing the Higgs boson CP properties in vector-boson fusion production in the H → τ+τ− channel with the ATLAS detector
The CP properties of the Higgs boson are studied in the vector-boson fusion production mode. The analysis exploits the decay mode of the Higgs boson into two τ-leptons using 140 fb−1 of proton-proton collision data at s = 13 TeV collected by the ATLAS experiment at the Large Hadron Collider. Results...
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| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2025 |
| País: | Chile |
| Institución: | Pontificia Universidad Católica de Chile |
| Repositorio: | Pontificia Universidad Católica de Chile |
| OAI Identifier: | oai:repositorio.uc.cl:11534/107095 |
| Acceso en línea: | https://doi.org/10.1007/JHEP10(2025)092 https://repositorio.uc.cl/handle/11534/107095 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Hadron-Hadron Scattering 510 Matemática física y química |
| Sumario: | The CP properties of the Higgs boson are studied in the vector-boson fusion production mode. The analysis exploits the decay mode of the Higgs boson into two τ-leptons using 140 fb−1 of proton-proton collision data at s = 13 TeV collected by the ATLAS experiment at the Large Hadron Collider. Results are obtained using the Optimal Observable method. CP-violating interactions between the Higgs boson and electroweak gauge bosons are considered in the effective field theory framework, with the interaction strength described in the HISZ basis by d ~ , and in the Warsaw basis by c H W ~ , c H B ~ , and c H W ~ B . No deviations relative to the Standard Model are observed, and limits are obtained on the strength parameters. The d ~ parameter is constrained to the interval [−0.012, 0.044] at the 95% confidence level while c H W ~ is constrained to [−0.24, 0.83], when considering both linear and quadratic effects of physics beyond the Standard Model. |
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