Measurement of the CP asymmetry in B− → Ds−D0 and B− → D−D0 decays

The CP asymmetry in B− → Ds−D0 and B− → D−D0 decays is measured using LHCb data corresponding to an integrated luminosity of 3.0 fb−1, collected in pp collisions at centre-of-mass energies of 7 and 8 TeV. The results are ACPB−→Ds−D0=−0.4±0.5±0.5%andACPB−→D−D0=2.3±2.7±0.4%\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\mathcal{A}}^{CP}\left({B}^{-}\to {D}_s^{-}{D}^0\right)=\left(-0.4\pm 0.5\pm 0.5\right)\%\kern0.5em \mathrm{and}\kern0.5em {\mathcal{A}}^{CP}\left({B}^{-}\to {D}^{-}{D}^0\right)=\left(2.3\pm 2.7\pm 0.4\right)\% $$\end{document}, where the first uncertainties are statistical and the second systematic. This is the first measurement of ACPB−→Ds−D0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\mathcal{A}}^{CP}\left({B}^{-}\to {D}_s^{-}{D}^0\right) $$\end{document} and the most precise determination of ACPB−→D−D0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\mathcal{A}}^{CP}\left({B}^{-}\to {D}^{-}{D}^0\right) $$\end{document}. Neither result shows evidence of CP violation. [graphic not available: see fulltext]