ATLAS Collaboration;
(2022)
Constraints on Higgs boson properties using WW∗(→eνμν)jj production in 36.1fb−1 of s√=13 TeV pp collisions with the ATLAS detector.
European Physical Journal C: Particles and Fields
, 82
, Article 622. 10.1140/epjc/s10052-022-10366-1.
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Abstract
This article presents the results of two studies of Higgs boson properties using the WW∗(→eνμν)jj final state, based on a dataset corresponding to 36.1fb−1 of s√=13 TeV proton–proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. The first study targets Higgs boson production via gluon–gluon fusion and constrains the CP properties of the effective Higgs–gluon interaction. Using angular distributions and the overall rate, a value of tan(α)=0.0±0.4(stat.)±0.3(syst.) is obtained for the tangent of the mixing angle for CP-even and CP-odd contributions. The second study exploits the vector-boson fusion production mechanism to probe the Higgs boson couplings to longitudinally and transversely polarised W and Z bosons in both the production and the decay of the Higgs boson; these couplings have not been directly constrained previously. The polarisation-dependent coupling-strength scale factors are defined as the ratios of the measured polarisation-dependent coupling strengths to those predicted by the Standard Model, and are determined using rate and kinematic information to be aL=0.91+0.10−0.18(stat.)+0.09−0.17(syst.) and aT=1.2±0.4(stat.)+0.2−0.3(syst.). These coupling strengths are translated into pseudo-observables, resulting in κVV=0.91+0.10−0.18(stat.)+0.09−0.17(syst.) and ϵVV=0.13+0.28−0.20 (stat.)+0.08−0.10(syst.). All results are consistent with the Standard Model predictions.
| Type: | Article |
|---|---|
| Title: | Constraints on Higgs boson properties using WW∗(→eνμν)jj production in 36.1fb−1 of s√=13 TeV pp collisions with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-022-10366-1 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-022-10366-1 |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10152721 |
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