Abstract / Description of output
The B^0_s-\bar{B}^0_s oscillation frequency Delta m_s is measured with 36 pb^{-1} of data collected in pp collisions at \sqrt{s} = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 B^0_s -> D_s^- \pi^+ and \B^0_s -> D_s^- pi^+ pi^- pi^+ signal decays are reconstructed, with average decay time resolutions of 44 fs and 36 fs, respectively. An oscillation signal with a statistical significance of 4.6 sigma is observed. The measured oscillation frequency is Delta m_s = 17.63 \pm 0.11 (stat) \pm 0.02 (syst) ps^{-1}.
Original language | English |
---|---|
Pages (from-to) | 177-184 |
Number of pages | 8 |
Journal | Physics Letters B |
Volume | 709 |
Issue number | 3 |
Early online date | 19 Dec 2011 |
DOIs | |
Publication status | Published - 19 Mar 2012 |