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

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

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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 f...

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Bibliographic Details
Main Authors: Aaij, R, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Alkhazov, G, Alvarez Cartelle, P, Alves, A, Amato, S, Amhis, Y, Anderson, J, Appleby, R, Aquines Gutierrez, O, Archilli, F, Arrabito, L, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G
Format: Journal article
Published: 2012
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Summary: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. © 2012 CERN.

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