Aad, G;
Abbott, B;
Abdallah, J;
Abdinov, O;
Aben, R;
Abolins, M;
AbouZeid, OS;
... Zwalinski, L; + view all
(2016)
Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS.
Journal of High Energy Physics
, 2016
(8)
, Article 147. 10.1007/JHEP08(2016)147.
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Abstract
A measurement of the B0 s decay parameters in the B0 s → J/ψφ channel using an integrated luminosity of 14.3 fb−1 collected by the ATLAS detector from 8 TeV pp collisions at the LHC is presented. The measured parameters include the CP-violating phase φs, the decay width Γs and the width difference between the mass eigenstates ∆Γs. The values measured for the physical parameters are statistically combined with those from 4.9 fb−1 of 7 TeV data, leading to the following: φs = −0.090 ± 0.078 (stat.) ± 0.041 (syst.) rad ∆Γs = 0.085 ± 0.011 (stat.) ± 0.007 (syst.) ps−1 Γs = 0.675 ± 0.003 (stat.) ± 0.003 (syst.) ps−1. In the analysis the parameter ∆Γs is constrained to be positive. Results for φs and ∆Γs are also presented as 68% and 95% likelihood contours in the φs-∆Γs plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.
| Type: | Article |
|---|---|
| Title: | Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP08(2016)147 |
| Publisher version: | http://doi.org/10.1007/JHEP08(2016)147 |
| Language: | English |
| Additional information: | © The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, B physics, CP violation, Flavor physics, Hadron-Hadron scattering (experiments) |
| 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-pp.ucl.ac.uk/id/eprint/1515734 |
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