CP asymmetries in decays of the $D^{0}-\bar{D}^{0}$ system revisited

Youshan Dai; Dongsheng Du

doi:doi:10.1007/s100520050425

EPJ

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2022 Impact factor 4.4

Particles and Fields

Eur. Phys. J. C 7, 525-538
DOI 10.1007/s100529801023

CP asymmetries in decays of the $D^{0}-\bar{D}^{0}$ system revisited

Youshan Dai^1,2 - Dongsheng Du¹

¹ Institute of High Energy Physics, Chinese Academy of Sciences P.O.Box 918(4), Beijing 100039, P.R. China
² Department of Physics, Hangzhou University, Hangzhou 310028, P.R. China

Received: 8 April 1998 / Revised version: 1 July 1998 / Published online: 29 October 1998

Abstract
CP violation in neutral D meson decays to the CP eigenstates and non-CP eigenstates is studied systematically within the framework of the Cabibbo-Kobayashi-Maskawa model. The nonleptonic two-body decay processes and the decay processes with semileptonic tagging are discussed in detail and the upper bounds of the direct and indirect CP violation in these decay processes are obtained. A method to measure the mixing parameter $\tilde{\epsilon}$ and to separate the direct and indirect CP violation in the decay processes with semileptonic tagging are also discussed.