| DATE: |
2006-04-25 16:00 - 17:00 |
| PLACE: |
Room 345 of Building 4 |
| TITLE: |
Physics Seminar: Latest results on Bs-meson particle-antipartice oscillations at CDF |
| CONTACT: |
shigeru.odaka kek.jp, 4342 |
| SPEAKER: |
Fumihiko Ukegawa (University of Tsukuba, CDF collaboration) |
| LANGUAGE: |
English |
| URL: |
http://seminar.kek.jp/physics/index.html |
| ABSTRACT: |
The particle-antiparticle oscillationsĦĦin the Bs meson system have long been considered a crucial measurement of the unitarity triangle of the Kobayashi-Maskawa quark mixing matrix, providing a precise determination of the magnitude of its elements |Vtd/Vts|. We report a new measurement from the CDF experiment, running at the Tevatron proton-antiproton collider at Fermilab. The measurement establishes the phenomenon at a 99.5% confidence level. Assuming the data reflect a true effect, we determine the oscillation frequency Delta ms and |Vtd/Vts|. |
