Measurement of the Bs0-Bs0 oscillation frequency δms in Bs0→Ds-(3)π decays
LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Whitehead, M. (Mark) and Williams, M. P.). (2012) Measurement of the Bs0-Bs0 oscillation frequency δms in Bs0→Ds-(3)π decays. Physics Letters B, Volume 709 (Number 3). pp. 177-184. ISSN 0370-2693
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Official URL: http://dx.doi.org/10.1016/j.physletb.2012.02.031
The Bs0-Bs0 oscillation frequency δms is measured with 36 pb-1 of data collected in pp collisions at s=7TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 Bs0→Ds-π+ and Bs0→Ds-π+π-π + signal decays are reconstructed, with average decay time resolutions of 44 fs and 36 fs, respectively. An oscillation signal with a statistical significance of 4.6σ is observed. The measured oscillation frequency is δm s=17.63±0.11(stat)±0.02(syst)ps -1.
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