Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/114890
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Type: | Journal article |
Title: | 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 |
Author: | Aad, G. Abbott, B. Abdinov, O. Abdallah, J. Abeloos, B. Aben, R. Abolins, M. Aben, R. Abolins, M. AbouZeid, O. Abraham, N. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. Adamczyk, L. Adams, D. Adelman, J. Adomeit, S. et al. |
Citation: | European Physical Journal C: Particles and Fields, 2016; 76(12):658-1-658-25 |
Publisher: | Springer |
Issue Date: | 2016 |
ISSN: | 1434-6044 1434-6052 |
Statement of Responsibility: | G. Aad … Paul D. Jackson … Lawrence Lee-Jr … Andreas Petridis … Martin White … et al. (ATLAS Collaboration) |
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. |
Keywords: | ATLAS Collaboration |
Rights: | © CERN for the benefit of the ATLAS collaboration 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
DOI: | 10.1140/epjc/s10052-016-4499-5 |
Published version: | http://dx.doi.org/10.1140/epjc/s10052-016-4499-5 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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hdl_114890.pdf | Published version | 1.52 MB | Adobe PDF | View/Open |
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