Aad, G;
Abbott, B;
Abbott, DC;
Abdinov, O;
Abud, AA;
Abeling, K;
Abhayasinghe, DK;
... Ferraz, VA; + view all
(2021)
Measurement of the CP-violating phase ϕs in B0s→J/ψϕ decays in ATLAS at 13 TeV.
The European Physical Journal C
, 81
(4)
, Article 342. 10.1140/epjc/s10052-021-09011-0.
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Abstract
A measurement of the B0s→J/ψϕ decay parameters using 80.5fb−1 of integrated luminosity collected with the ATLAS detector from 13 TeV proton–proton collisions at the LHC is presented. The measured parameters include the CP-violating phase ϕs, the width difference ΔΓs between the B0s meson mass eigenstates and the average decay width Γs. The values measured for the physical parameters are combined with those from 19.2fb−1 of 7 and 8 TeV data, leading to the following: ϕs=ΔΓs=Γs=−0.087±0.036 (stat.)±0.021 (syst.) rad0.0657±0.0043 (stat.)±0.0037 (syst.) ps−10.6703±0.0014 (stat.)±0.0018 (syst.) ps−1 Results for ϕs and ΔΓs are also presented as 68% confidence level contours in the ϕs–ΔΓs plane. Furthermore the transversity amplitudes and corresponding strong phases are measured. ϕs and ΔΓs measurements are in agreement with the Standard Model predictions.
| Type: | Article |
|---|---|
| Title: | Measurement of the CP-violating phase ϕs in B0s→J/ψϕ decays in ATLAS at 13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-021-09011-0 |
| Publisher version: | http://dx.doi.org/10.1140/epjc/s10052-021-09011-0 |
| Language: | English |
| Additional information: | Open Access 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 UCL > Provost and Vice Provost Offices > UCL BEAMS 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10127278 |
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