Title: Correlated D decays at the psi(3770)

Speaker: Prof. Michael D. Sokoloff ,Physics Department, University of Cincinnati

Time: 3:00PM, Monday, Oct. 24 2011

Room: Main building, B326

Abstract

D0-D0bar mixing was discovered by the BABAR and Belle experiments in 2007, and confirmed shortly afterwards by the CDF experiment. In these experiments the flavor of the neutral D meson is tagged by the charge of the slow pion from D* decay,or is ignored. The formalism for mixing in these cases is that of an isolated meson. When a pair of neutral D mesons is produced at the psip(3770) the charge conjugation quantum number of the system is -1.

Thus, the matrix elements for the time-dependent final states are antisymmetric under the interchange of the two D meson amplitudes, leading to correlations in rates related to mixing and CP violation. In this talk I will review basic ideas related to mixing, the state of the field today, and then focus on how well a charm threshold factory could measure mixing parameters using time-dependent, correlated, decay rates.