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Measurement of the relative width difference of the B0‐B¯0 system with the ATLAS detector

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ATLAS Collaboration (Including: Beckingham, M., Ennis, Joseph Stanford, Harrison, P. F., Jeske, C., Jones, G. (Graham), Martin, T. A., Murray, W., Pianori, E. and Spangenberg, Martin). (2016) Measurement of the relative width difference of the B0‐B¯0 system with the ATLAS detector. Journal of High Energy Physics, 2016 (6). 81. doi:10.1007/jhep06(2016)081 ISSN 1029-8479.

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Official URL: http://dx.doi.org/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¯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.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Journal or Publication Title: Journal of High Energy Physics
Publisher: Springer Berlin Heidelberg
ISSN: 1029-8479
Official Date: 14 June 2016
Dates:
DateEvent
14 June 2016Published
6 June 2016Accepted
Volume: 2016
Number: 6
Article Number: 81
DOI: 10.1007/jhep06(2016)081
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): ** From Springer Nature via Jisc Publications Router. ** History: ** received: 25-05-2016 ** collection: 01-06-2016 ** accepted: 06-06-2016 ** epub: 14-06-2016
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 14 September 2018
Date of first compliant Open Access: 14 September 2018

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