Measurement of the relative width difference of the B⁰-B¯⁰ system with the ATLAS detector
Files
(Published Version)
Date
2016
Authors
The ATLAS Collaboration,
Aaboud, M.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
The Journal of High Energy Physics, 2016; 2016(6):081-0-081-39
Statement of Responsibility
M. Aaboud ... P. Jackson ... L. Lee ... A. Petridis ... M. J. White ... et al. (The ATLAS Collaboration)
Conference Name
Abstract
This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0-B¯¯¯¯0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s√=7 TeV and s√=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.
School/Discipline
Dissertation Note
Provenance
Description
Published: June 14, 2016
Access Status
Rights
© The Author(s) 2016. Open Access. 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.