文章基本信息

标题：Time-dependent CP asymmetries in D and B decays
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作者：A. BEVAN
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2011
卷号：2011
期号：EPS-HEP2011
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The CKM paradigm has been tested thoroughly over the last 40 years in both the neutral K and B systems. The recent discovery of neutral charm meson mixing has prompted the search for CP violation in D decays. We discuss the prospects of performing time-dependent CP asymmetry measurements at facilities either taking data or under construction. Such measurements can (i) provide precision determinations of the charm mixing phase, and (ii) be used to probe for possible new physics effects (and perhaps ultimately constrain the CKM paradigm). We propose the use of the time-dependent asymmetry measurement of D0 !K+K􀀀 decays to measure the phase of charm mixing, where existing experiments that are either under construction or taking data should be able to reach a precision of < 1:5, and to use the phase difference between D0 !K+K􀀀 and D0 !p+p􀀀 decays to constrain the angle bc of the cu unitarity triangle up to theoretical uncertainties from long distance and loop contributions. A large phase difference measured between these modes would indicate new physics.