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Precision measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency with the decay B-s(0) -> D-s(-)pi(+)

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Precision measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency with the decay B-s(0) -> D-s(-)pi(+)

dc.contributor.author	LHCb Collaboration
dc.contributor.author	Oyanguren Campos, Arantza
dc.contributor.author	Ruiz Valls, Pablo
dc.date.accessioned	2014-03-31T10:35:36Z
dc.date.available	2014-03-31T10:35:36Z
dc.date.issued	2013
dc.identifier.uri	http://dx.doi.org/10.1088/1367-2630/15/5/053021
dc.identifier.uri	http://hdl.handle.net/10550/33845
dc.description.abstract	A key ingredient to searches for physics beyond the Standard Model in B-s(0) mixing phenomena is the measurement of the B-s(0)-(B) over bar (0)(s) oscillation frequency, which is equivalent to the mass difference Delta m(s) of the B-s(0) mass eigenstates. Using the world's largest B-s(0) 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 Delta m(s) is presented. A total of about 34 000 B-s(0) -> D-s(-)pi(+) signal decays are reconstructed, with an average decay time resolution of 44 fs. The oscillation frequency is measured to be Delta m(s) = 17.768 +/- 0.023 (stat) +/- 0.006 (syst) ps(-1), which is the most precise measurement to date.
dc.relation.ispartof	New Journal of Physics, 2013, vol. 15, p. 053021-1-053021-15
dc.rights.uri	info:eu-repo/semantics/openAccess
dc.source	LHCb Collaboration Oyanguren Campos, Arantza Ruiz Valls, Pablo 2013 Precision measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency with the decay B-s(0) -> D-s(-)pi(+) New Journal of Physics 15 053021-1 053021-15
dc.subject	Física nuclear
dc.subject	Partícules (Física nuclear)
dc.title	Precision measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency with the decay B-s(0) -> D-s(-)pi(+)
dc.type	info:eu-repo/semantics/article
dc.date.updated	2014-03-31T10:35:36Z
dc.identifier.doi	http://dx.doi.org/10.1088/1367-2630/15/5/053021
dc.identifier.idgrec	094068