# name
Precision measurement of the B0s-overlineB{}^0_s oscillation frequency with the decay B0s → D-sπ+

# metadata.dc.description.abstract[].value
A key ingredient to searches for physics beyond the Standard Model in B0s mixing phenomena is the measurement of the B0s- ${{\overline{ {\mathrm {B}}}{}}^0_{\mathrm { s}}}$ oscillation frequency, which is equivalent to the mass difference Δms of the B0s mass eigenstates. Using the world's largest B0s meson sample accumulated in a dataset, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment at the CERN LHC in 2011, a measurement of Δms is presented. A total of about 34 000 B0s → D−sπ+ signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Δms = 17.768 ± 0.023 (stat) ± 0.006 (syst) ps−1, which is the most precise measurement to date.

# metadata.dc.rights[].value
(c) IOP Publishing Ltd and Deutsche Physikalische Gesellschaft, 2013

# metadata.dc.source[].value
Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.subject.other[].value
Large Hadron Collider (France and Switzerland)

# metadata.dc.title[].value
Precision measurement of the B0s-overlineB{}^0_s oscillation frequency with the decay B0s → D-sπ+