@article{d815cadf621f4266911ebb06d55d5b8e,
title = "Measurement of the relative width difference of the $B^0$-$\bar B^0$ system with the ATLAS detector",
abstract = "This paper presents the measurement of the relative width difference ΔΓd/Γd of the B0-B¯¯¯¯0B0-B¯0 system using the data collected by the ATLAS experiment at the LHC in pp collisions at s√=7s=7 TeV and s√=8s=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 = "hep-ex",
author = "Brian Cox and Stephen Watts and Terence Wyatt and {Da Via}, Cinzia and Joleen Pater and Andrew Pilkington and Darren Price and Alexander Oh and {ATLAS Collaboration} and Sarah Barnes and Rafal Bielski and Nicholas Dann and Giulio Forcolin and {Iturbe Ponce}, Julia and Xingguo Li and Frederick Loebinger and Stephen Marsden",
note = "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/",
year = "2016",
month = jun,
day = "14",
doi = "10.1007/JHEP06(2016)081",
language = "English",
volume = "2016",
journal = "The Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Nature",
number = "6",
}