13–17 Aug 2013
University of California, Santa Cruz
US/Pacific timezone

Measurements of charm mixing and CP asymmetries in CDF data

15 Aug 2013, 13:50
20m
College 9/10 Multipurpose Room (University of California, Santa Cruz)

College 9/10 Multipurpose Room

University of California, Santa Cruz

oral presentation Quark and Lepton Flavor Physics Quark and Lepton Flavor Physics

Speaker

Patrick Lukens

Description

The full CDF Run II data set, corresponding to an integrated luminosity of nearly 10 fb^-1 of proton-antiproton collisions at 1.96 TeV, is used to measure mixing and CP asymmetries in charm mesons. The large number of reconstructed charm decays are used to measure CP asymmetries are measured for a number of decay modes. Mixing of D0 and D0-bar mesons is observed with a significance corresponding to 6.1 Gaussian sigmas in the time-dependent ratio of decay rate for D0 -> K+ pi- to that for D0 -> K-pi+. The mixing parameters are measured to be R_D = (3.51 ± 0.35) 10^-3, x'^2 = (0.08 ± 0.18) 10^-3, and y' = (4.3 ± 4.3) 10^-3.
APS member ID 60025158

Primary author

Robert Harr (Wayne State University)

Co-author

Jonathan Lewis (Fermilab)

Presentation materials