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Measurement of the B s0-B -s0 oscillation frequency δm s in B s0→D s-(3)π decays

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Abstract

The B s0-B -s0 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 s0→D s-π+ and B s0→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. © 2012 CERN.

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Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., … Zvyagin, A. (2012). Measurement of the B s0-B -s0 oscillation frequency δm s in B s0→D s-(3)π decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 709(3), 177–184. https://doi.org/10.1016/j.physletb.2012.02.031

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