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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| Format: | Article |
| Status: | Published version |
| Publication date: | 2025 |
| Country: | Chile |
| Institution: | Pontificia Universidad Católica de Chile |
| Repository: | Pontificia Universidad Católica de Chile |
| OAI Identifier: | oai:repositorio.uc.cl:11534/107095 |
| Online Access: | https://doi.org/10.1007/JHEP10(2025)092 https://repositorio.uc.cl/handle/11534/107095 |
| Access Level: | Open access |
| Keyword: | Hadron-Hadron Scattering 510 Matemática física y química |
| Summary: | 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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