TL;DR
This paper measures the CP-even content of specific D meson decays using quantum-correlated data, providing results that enhance the potential for precise CP violation studies and gamma angle measurements in particle physics.
Contribution
It introduces measurements of the fractional CP-even content for D->pi+pi-pi0 and D->K+K-pi0 decays using CLEO-c data, highlighting their importance for CP violation research.
Findings
High CP-even content in D->pi+pi-pi0 (0.973±0.017)
Moderate CP-even content in D->K+K-pi0 (0.732±0.055)
Implications for improved gamma and CP violation measurements
Abstract
Quantum-correlated psi(3770)->DDbar decays collected by the CLEO-c experiment are used to perform measurements of F+, the fractional CP-even content of the self-conjugate decays D->pi+pi-pi0 and D->K+K-pi0. Values of 0.973+/-0.017 and 0.732+/-0.055 are obtained for pi+pi-pi0 and K+K-pi0, respectively. The high CP-even content of D->pi+pi-pi0, in particular, makes this a promising mode for improving the precision on gamma and for measurements of CP violation in D decay.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Atomic and Subatomic Physics Research