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

, The ATLAS collaboration (2016) Measurement of the relative width difference of the B0-B¯0 system with the ATLAS detector. Journal of High Energy Physics (6). ISSN 1029-8479

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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=7TeV and √=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
Journal or Publication Title:
Journal of High Energy Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
80843
Deposited By:
Deposited On:
09 Aug 2016 14:24
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Jan 2021 12:04