First determination of the CP content of D → π+π-π0 and D → K+K-π0

被引：33
|
作者：
Nayak, M. [1 ]
Libby, J. [1 ]
Malde, S. [2 ]
Thomas, C. [2 ]
Wilkinson, G. [2 ,3 ]
Briered, R. A. [4 ]
Naik, P. [5 ]
Gershon, T. [6 ]
Bonvicini, G. [7 ]
机构：
[1] Indian Inst Technol, Madras 600036, Tamil Nadu, India
[2] Univ Oxford, Oxford OX1 3RH, England
[3] European Org Nucl Res CERN, CH-1211 Geneva, Switzerland
[4] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[5] Univ Bristol, Bristol BS8 1TL, Avon, England
[6] Univ Warwick, Coventry CV4 7AL, W Midlands, England
[7] Wayne State Univ, Detroit, MI 48202 USA
来源：
PHYSICS LETTERS B | 2015年 / 740卷
基金：
英国科学技术设施理事会;
关键词：
Charm decay; Quantum correlations; CP violation; PHASE; VIOLATION;
D O I：
10.1016/j.physletb.2014.11.022
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Quantum-correlated psi (3770) -> D (D) over bar decays collected by the CLEO-c experiment are used to perform first measurements of F+, the fractional CP-even content of the self-conjugate decays D -> pi(+)pi(-)pi(0) and D -> K+K-pi(0). Values of 0.968 +/- 0.017 +/- 0.006 and 0.731 +/- 0.058 +/- 0.021 are obtained for pi(+)pi(-)pi(0) and K+K-pi(0), respectively. It is demonstrated how modes of this sort can be cleanly included in measurements of the unitarity triangle angle gamma using B--/+ -> DK -/+ decays. The high CP-even content of D -> pi(+)pi(-)pi(0), in particular, makes this a promising mode for improving the precision on gamma. (C) 2014 The Authors. Published by Elsevier B.V.
引用
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页码：1 / 7
页数：7
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