Test of CP invariance in vector-boson fusion production of the Higgs boson using the Optimal Observable method in the ditau decay channel with the ATLAS detector
2016 | journal article. A publication with affiliation to the University of Göttingen.
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Test of CP invariance in vector-boson fusion production of the Higgs boson using the Optimal Observable method in the ditau decay channel with the ATLAS detector
Aad, G.; Abbott, B.; Abdinov, O.; Abdallah, J.; Abeloos, B.; Aben, R. & Abolins, M. et al. (2016)
The European Physical Journal C, 76 art. 658. DOI: https://doi.org/10.1140/epjc/s10052-016-4499-5
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Details
- Authors Group
- ATLAS Collaboration
The authors list is uncomplete: - Authors
- Aad, G.; Abbott, B.; Abdinov, O.; Abdallah, J.; Abeloos, B.; Aben, R.; Abolins, M.; AbouZeid, O. S.; Zwalinski, L.
- Abstract
- A test of CP invariance in Higgs boson production via vector-boson fusion using the method of the Optimal Observable is presented. The analysis exploits the decay mode of the Higgs boson into a pair of τ leptons and is based on 20.3 fb−1 of proton–proton collision data at √ s = 8 TeV collected by the ATLAS experiment at the LHC. Contributions from CP-violating interactions between the Higgs boson and electroweak gauge bosons are described in an effective field theory framework, in which the strength of CP violation is governed by a single parameter d˜. The mean values and distributions of CP-odd observables agree with the expectation in the Standard Model and show no sign of CP violation. The CP-mixing parameter d˜ is constrained to the interval (−0.11, 0.05) at 68% confidence level, consistent with the Standard Model expectation of d˜ = 0.
- Issue Date
- 2016
- Journal
- The European Physical Journal C
- Project
- info:eu-repo/grantAgreement/EC/FP7/246806/EU/European Particle physics Latin American NETwork/EPLANET
info:eu-repo/grantAgreement/EC/H2020//EU// - Organization
- Fakultät für Physik
- ISSN
- 1434-6052
- Language
- English