Measurement of the relative width difference of the B0-(B)over-bar0 system with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2846 more authors) (2016) Measurement of the relative width difference of the B0-(B)over-bar0 system with the ATLAS detector JOURNAL OF HIGH ENERGY PHYSICS, 2016 (6). 081-. ISSN 1029-8479, 1029-8479

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Abstract

Abstract: This paper presents the measurement of the relative width difference ΔΓ<inf>d</inf>/Γ<inf>d</inf> 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 ΔΓ<inf>d</inf>/Γ<inf>d</inf> is obtained by comparing the decay-time distributions of B0 → J/ψK<inf>S</inf> and B0 → J/ψK*0(892) decays. The result is ΔΓ<inf>d</inf>/Γ<inf>d</inf> = (−0.1±1.1 (stat.)± 0.9 (syst.)) × 10−2. Currently, this is the most precise single measurement of ΔΓ<inf>d</inf>/Γ<inf>d</inf>. It agrees with the Standard Model prediction and the measurements by other experiments.[Figure not available: see fulltext.]

Item Type: Article
Additional Information: 20 pages plus author list + cover page (38 pages total), 5 figures, 2 tables, submitted to Journal of High Energy Physics, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2015-01/
Uncontrolled Keywords: B physics, Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 23 Feb 2017 09:17
Last Modified: 24 Jun 2026 16:55
DOI: 10.1007/JHEP06(2016)081
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3005945
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