Aaboud, M;
Aad, G;
Abbott, B;
Abdallah, J;
Abdinov, O;
Abeloos, B;
Aben, R;
... Zwalinski, L; + view all
(2016)
Measurement of the relative width difference of the B-0-(B)over-bar(0) system with the ATLAS detector.
Journal of High Energy Physics
, 2016
, Article 81. 10.1007/JHEP06(2016)081.
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Abstract
This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0-B¯¯¯¯0B0-B¯0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s√=7s=7 TeV and s√=8s=8 TeV and corresponding to an integrated luminosity of 25.2 fb−1. The value of ΔΓd/Γd is obtained by comparing the decay-time distributions of B0 → J/ψKS and B0 → J/ψK*0(892) decays. The result is ΔΓd/Γd = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10−2. Currently, this is the most precise single measurement of ΔΓd/Γd. It agrees with the Standard Model prediction and the measurements by other experiments.
| Type: | Article |
|---|---|
| Title: | Measurement of the relative width difference of the B-0-(B)over-bar(0) system with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP06(2016)081 |
| Publisher version: | http://doi.org/10.1007/JHEP06(2016)081 |
| Language: | English |
| Additional information: | Copyright © 2016 CERN for the benefit of the ATLAS Collaboration. Reproduction of this article or parts of it is allowed as specified in the CC-BY-4.0 license |
| 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/1500770 |
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