EPJ Web of Conferences
Volume 60, 2013LHCP 2013 – Large Hadron Collider Physics 2013
|Number of page(s)||4|
|Section||(Parallel) Heavy Flavour Session|
|Published online||26 November 2013|
Measurement of the mixing at CDF
Department of Physics, University of Siena and INFN, via Roma 56, 53100, Siena, Italy
a e-mail: email@example.com
We report on the observation of oscillations by measuring the time-dependent ratio of yields for the rare decay D0 → K+π− to the favored decay D0 → K−π+ at the Collider Detector at Fermilab (CDF). Using 9.6 fb−1 of integrated luminosity of √s = 1.96 TeV collisions recorded in the full CDF Run II, the signals of 7.6×106 D0 → K−π+ and 33×103 D0 → K+π− decays are reconstructed in D*-tagged events, with proper decay times between 0.75 and 10 mean D0 lifetimes. We measure the mixing parameters x′2 = (0.08 ± 0.18) × 10−3, y′ = (4.3 ± 4.3) × 10−3, and RD = (3.51 ± 0.35) × 10−3. Our results are consistent with standard model expectations and similar results from proton-proton collisions and exclude the no-mixing hypothesis with a significance equivalent to 6.1 standard deviations.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.