摘要
本文研究了B_d^0-_d^0和B_s^0-_s^0系统二体重子衰变中的CP不守恒效应。我们讨论了两种实验背景:(1)B对在Z^0共振峰不相干产生,(2)电荷共轭宇称C=+1的B对在γ(4S)共振峰以上产生。我们估算了检验该效应所需的bb对数目。对于衰变B_d^0→PP,Δ^(++)■^(--)和Δ~0■~0,N_(b)～10~7—10~8。
CP-violating effects in partial-decay-rate asymmetries for two-body baryonic decays of B_d^0-B_d^0 and B_s^0-B_s^0 systems are examined. We concentrate on those final states into which both B^0 and B^0 can decay. Two cases are discussed in detail: one is for Z^0 factory for incoherent BB production, the other is for C=+1 BB pro- duction above the γ(4S) resonance at symmetric colliders. The bb pairs needed for testing these effects are estimated for 3σ signature. For the decay modes B_d^0→PP, △^(++)■^(--) and △~0■~0, N_(b)^-～10~7--10~8.
出处
《高能物理与核物理》
CSCD
北大核心
1992年第5期398-407,共10页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
