论文标题
高能量物理学中的弱价值扩增：用于精确测量B Meson衰减中CP的案例研究
Weak Value Amplification in High Energy Physics: A Case Study for Precision Measurement of CP Violation in B Meson Decays
论文作者
论文摘要
Aharonov等人提出的弱价值扩增技术。 1988年，出于精确度量的目的，已应用于各种物理领域，这是通过利用“选择后”自由来积极指定物理过程中最终状态的自由。在这里，我们首次报告了在高能粒子物理学中使用弱值扩增技术的可行性，尤其是在测量B中森衰减中CP侵入的参数时，由于后选择，预计衰减模式的有效寿命在统计上会延长。我们的分析表明，当在Superkekb对撞机的Belle II实验中采用时，有效的寿命可能会延长高达2.6倍，并且CP侵略参数的测量精度也将通过其效果提高。
The technique of weak value amplification, proposed by Aharonov et al. in 1988, has been applied for various fields of physics for the purpose of precision measurement, which is made possible by exploiting the freedom of `postselection' specifying actively the final state in the physical process. Here we report for the first time the feasibility of utilizing the technique of weak value amplification in high energy particle physics, especially in measuring the CP-violating parameters in B meson decays, where the effective lifetime of the decay mode is expected to be prolonged statistically due to the postselection. Our analysis shows that, when adopted in the Belle II experiment at the SuperKEKB collider, the effective lifetime may be prolonged up to 2.6 times, and that the measurement precision of the CP-violating parameters will also be improved by its effect.
