Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/101578
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Type: Journal article
Title: Measurement of the relative width difference of the B⁰-B¯⁰ system with the ATLAS detector
Other Titles: Measurement of the relative width difference of the B(0)-B-bar(0) system with the ATLAS detector
Author: The ATLAS Collaboration
Aaboud, M.
Citation: The Journal of High Energy Physics, 2016; 2016(6):081-0-081-39
Publisher: Springer
Issue Date: 2016
ISSN: 1126-6708
1029-8479
Statement of
Responsibility: 
M. Aaboud ... P. Jackson ... L. Lee ... A. Petridis ... M. J. White ... et al. (The ATLAS Collaboration)
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.
Keywords: B physics; Hadron-Hadron scattering (experiments)
Description: Published: June 14, 2016
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.
DOI: 10.1007/JHEP06(2016)081
Published version: http://dx.doi.org/10.1007/JHEP06(2016)081
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Physics publications

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