Measurement of the B s 0-B - s 0 oscillation frequency δm s in B s 0→D s -(3)π decays

The LHCb Collaboration

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The B s 0-B - s 0 oscillation frequency δm s 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 B s 0→D s -π+ and B s 0→D s -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.

Original languageEnglish
Pages (from-to)177-184
Number of pages8
JournalPhysics Letters B
Issue number3
Publication statusPublished - 19 Mar 2012
Externally publishedYes

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