Extraction of the CP-violating phase γ using B → Kππ and B → KKK decays

被引：13
作者：
Bhattacharya, Bhubanjyoti [1 ]
Imbeault, Maxime [2 ]
London, David [1 ]
机构：
[1] Univ Montreal, Montreal, PQ H3C 3J7, Canada
[2] Cegep St Laurent, Dept Phys, Montreal, PQ H4L 3X7, Canada
来源：
PHYSICS LETTERS B | 2014年 / 728卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/j.physletb.2013.11.038
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using the BABAR measurements of the Dalitz plots for B-0 -> K+pi(0)pi(-), B-0 -> K+pi(+)pi(-), B+ -> K+pi(+)pi(-), B-0 -> K+K-, and B-0 -> (KK0)-K-0(K) over bar (0) decays, we demonstrate that it is possible to cleanly extract the weak phase gamma. We find four possible solutions. Three of these - 32 degrees, 259 degrees, and 315 degrees - are in disagreement with the SM, while one - 77 degrees - is consistent with the SM. An advantage of this Dalitz-plot method is that one can obtain many independent measurements of gamma, thereby reducing its statistical error. An accurate determination of the errors, however, requires detailed knowledge of the data. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：206 / 209
页数：4
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