CP-VIOLATION USING NON-CP EIGENSTATE DECAYS OF NEUTRAL B-MESONS

被引:75
作者
ALEKSAN, R
DUNIETZ, I
KAYSER, B
LEDIBERDER, F
机构
[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309
[2] LAB ACCELERATEUR LINEAIRE,F-91405 ORSAY 05,FRANCE
[3] NATL SCI FDN,DIV PHYS,WASHINGTON,DC 20550
基金
美国国家科学基金会;
关键词
D O I
10.1016/0550-3213(91)90619-9
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Neutral B-meson decays into non-CP eigenstates are considered as a means for observing CP nonconservation. We show that sizeable CP-violating asymmetries and clean measurements of the phases of the CKM matrix elements can be obtained using these decays provided they satisfy some necessary conditions that can be experimentally verified. It is also argued that two meson final states, in which the quark content of one meson is the CP conjugate of the quark content of the second one, do fulfill these requirements and are a particularly fertile and promising ground for studying CP violation. Two interesting examples, B --> rho +/- pi -/+ and B --> a1 +/- pi -/+, are studied in detail. Their reconstruction efficiencies and their backgrounds are discussed for a generic asymmetric B factory detector. It is found that, within this framework, those decay modes can give a better opportunity for observing CP violation and measuring the CKM phases than the B --> pi+pi- decays.
引用
收藏
页码:141 / 165
页数:25
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