Large direct CP violation in B → φφXs decays

被引：8
|
作者：
Hazumi, M [1 ]
机构：
[1] High Energy Accelerator Res Org, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan
来源：
PHYSICS LETTERS B | 2004年 / 583卷 / 3-4期
基金：
日本学术振兴会;
关键词：
B decay; direct CP violation; new physics;
D O I：
10.1016/j.physletb.2003.12.071
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a novel method to search for a new CP-violating phase in the b --> s (s) over bars (s) over bars transition rising B --> phiphiX(s) decays, where X-s represents a final state with a specific strange flavor such as K+/-, K*(+/-) or K+/-T-/+. Direct CP violation can be enhanced due to an interference between an amplitude beyond the standard model (SM) and the SM decay amplitude through the eta(c) resonance. We find that the CP asymmetry can be as large as 0.4 within the present experimental bounds on the b --> s (s) over bars transition. These decays provide a very clean experimental signature and the background is expected to be small in particular at e(+)e(-) B factories. A simulation study for the B+/- --> phiphiK(+/-) decay shows that the statistical significance of CP violation can exceed 5 standard deviations with 10(9) B mesons. (C) 2004 Published by Elsevier B.V.
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页码：285 / 292
页数：8
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