Measurement of the Bs0-Bs0 oscillation frequency δms in Bs0→Ds-(3)π decays
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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