Kavli Affiliate: Takeo Higuchi
| First 5 Authors: Satoshi Higashino, Yuichiro Mori, Yosuke Takubo, Takeo Higuchi, Akimasa Ishikawa
| Summary:
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.
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