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Measuring gamma cleanly with CP-tagged B(s) and B(d) decays
1Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA.
Physical Review Letters
|September 16, 2000
Summary
This study introduces a novel method to measure the Cabibbo-Kobayashi-Maskawa phase gamma using CP-tagged B(s) decays. Experiments at a high-luminosity collider could determine this fundamental parameter of particle physics.
Area of Science:
- Particle Physics
- High-Energy Physics
- Quantum Mechanics
Background:
- The Cabibbo-Kobayashi-Maskawa (CKM) phase gamma is a fundamental parameter in the Standard Model of particle physics.
- Precise measurement of CP violation in the B meson system is crucial for testing the Standard Model and searching for new physics.
Purpose of the Study:
- To propose a new experimental method for measuring the CKM phase gamma.
- To explore the feasibility of such measurements at future high-luminosity colliders.
Main Methods:
- Utilizing partial decay rates of CP-tagged B(s) meson decays.
- Proposing experiments at a symmetric e(+)e(-) collider operating at the Upsilon(5S) resonance for B(s)&Bmacr;(s) pair production in a CP-definite state.
- Discussing CP tagging in the B(d) system at the Upsilon(4S) requiring time-dependent analysis.
Main Results:
- A novel method for measuring the CKM phase gamma is proposed.
- The feasibility of performing this measurement at a high-luminosity Upsilon(5S) collider is discussed.
- CP tagging strategies for B(d) decays are also considered.
Conclusions:
- The proposed method offers a new avenue for precisely determining the CKM phase gamma.
- High-luminosity colliders provide a promising environment for these measurements.
- Further investigations into CP tagging in B(d) systems are warranted.
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