Measurement of Bs - anti Bs oscillation frequency

por Iván Vila (IFCA)

jueves 29 jun. 2006 11:00 → 12:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We report a measurement of the Bs - Bs oscillations and a determination of |Vtd|/|Vts| using the CDF Detector operating at the Fermilab Tevatron. This result is derived from 1 fb-1 of pp collisions at 1.96TeV. We use semileptonic and hadronic Bs meson decays and observe a signature consistent with Bs - Bs oscillations. The probability that the data could randomly fluctuate to mimic such a signature is 0.5%. The results are: Δms = 17.33 + 0.42 - 0.21 (stat) ± 0.07(sys) |Vtd|/|Vts| = 0.208 +0.008 - 0.007 (stat +sys)