%0 Journal Article
%T Precise determination of the B-s(0)-B-s(-0) oscillation frequency
%A LHCb Collaboration (Aaij, R. et al
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%J Nature Physics
%D 2022
%V 18
%I Nature Portfolio
%@ 1745-2473
%G English
%F LHCbCollaborationAaij_etal2022
%O WOS:000739810100002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5075), last updated on Mon, 19 Dec 2022 07:57:53 +0000
%X Mesons comprising a beauty quark and strange quark can oscillate between particle (B-s(0)) and antiparticle (B-s(-0)) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, Delta m(s). Here we present a measurement of Delta m(s) using B-s(0) -> D-s(-)pi(+) decays produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The oscillation frequency is found to be Delta m(s) = 17.7683 +/- 0.0051 +/- 0.0032 ps(-1), where the first uncertainty is statistical and the second is systematic. This measurement improves on the current Delta m(s) precision by a factor of two. We combine this result with previous LHCb measurements to determine Delta m(s) = 17.7656 +/- 0.0057 ps(-1), which is the legacy measurement of the original LHCb detector.
%R 10.1038/s41567-021-01394-x
%U https://arxiv.org/abs/2104.04421
%U https://doi.org/10.1038/s41567-021-01394-x
%P 54-58