Precision Measurement of CP Violation in D0->pi+pi- at CDF
High Energy Physics - Experiment
2011-07-08 v3
Abstract
We report a preliminary measurement of the CP violating asymmetry in D0->pi+pi- using approximately 215,000 decays reconstructed in about 5.94/fb of CDF data. We use the strong D*+->D0pi+ decay ("D* tag") to identify the flavor of the charmed meson at production time and exploit CP-conserving strong c-cbar pair-production in p-pbar collisions. Higher statistic samples of Cabibbo-favored D0->K-pi+ 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.
Cite
@article{arxiv.1011.4892,
title = {Precision Measurement of CP Violation in D0->pi+pi- at CDF},
author = {Angelo Di Canto},
journal= {arXiv preprint arXiv:1011.4892},
year = {2011}
}
Comments
6 pages, 9 figures, 1 table. Proceedings for HQL 2010