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

页码：1 / 7

页数：7

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