Download or read book Precision Measurement of CP Violation in $D0̂\to\pi+̂\pi-̂$ at CDF. written by and published by . This book was released on 2010 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report a preliminary measurement of the CP violating asymmetry in D° →??− using approximately 215,000 decays reconstructed in about 5.94/fb of CDF data. We use the strong D* ± D°?+ decay (D* tag) to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c-{bar c} pair-production in p-{bar p} collisions. Higher statistic samples of Cabibbo-favored D° → K−?+ decays with and without D* tag are used to highly suppress systematic uncertainties due to detector effects. The result is the world's most precise measurement to date.