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http://hdl.handle.net/2241/103690
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| Title: | Observation of B<sub>s</sub><sup>0</sup>-[overline B]<sub>s</sub><sup>0</sup> Oscillations |
| Authors: | CDF Collaboration
Hara, K.
Kim, S. H.
Maruyama, T.
Takeuchi, Y.
Ukegawa, F.
原, 和彦
金, 信弘
丸山, 勉
武内, 勇司
受川, 史彦 |
| Issue Date: | Dec-2006 |
| Publisher: | The American Physical Society |
| Journal Title: | Physical review letters |
| Volume: | 97 |
| Issue: | 24 |
| Start Page: | 242003 |
| DOI: | 10.1103/PhysRevLett.97.242003 |
| Abstract: | We report the observation of B<sub>s</sub><sup>0</sup>-[overline B]<sub>s</sub><sup>0</sup> oscillations from a time-dependent measurement of the B<sub>s</sub><sup>0</sup>-[overline B]<sub>s</sub><sup>0</sup> oscillation frequency Deltams. Using a data sample of 1 fb-1 of p[overline p] collisions at sqrt(s)=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic Bs decays, 3100 partially reconstructed hadronic Bs decays, and 61 500 partially reconstructed semileptonic Bs decays. We measure the probability as a function of proper decay time that the Bs decays with the same, or opposite, flavor as the flavor at production, and we find a signal for B<sub>s</sub><sup>0</sup>-[overline B]<sub>s</sub><sup>0</sup> oscillations. The probability that random fluctuations could produce a comparable signal is 8×10-8, which exceeds 5sigma significance. We measure Deltams=17.77±0.10(stat)±0.07(syst) ps-1 and extract |Vtd/Vts|=0.2060±0.0007(Deltams)<sub>-0.0060</sub><sup>+0.0081</sup>(Deltamd+theor). |
| URI: | http://hdl.handle.net/2241/103690 |
| Rights: | ©2006 The American Physical Society |
| Text Version: | publisher |
| Appears in Collections: | Physical review letters
金 信弘 (Kim Shinhong (nobuhiro))
受川 史彦 (Ukegawa Fumihiko)
武内 勇司 (TAKEUCHI YUJI)
原 和彦 (Hara Kazuhiko)
丸山 勉 (Maruyama Tsutomu)
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