Study of P and CP symmetries in Ξ_c~+→Ξ~-π~+π~+ at electron-positron collider

【摘要】 Symmetry studies represent one of the most promising frontiers in particle physics research.This investigation focuses on exploring P and CP symmetries in the charm system through the measurement of asymmetry decay parameters in the three-body decay of Ξ_c~+.By incorporating electron and positron beam polarization effects and utilizing the helicity formalism,we characterize the decay of Ξ_c~+ and its secondary hyperons through asymmetry decay parameters.The complete angular distribution formula for these decays is systematically derived.Our study evaluates the sensitivity of the asymmetry parameters for the Ξ_c~+→Ξ~-π~+π~+ decay channel under various data sample sizes and beam polarization scenarios.The findings establish a robust theoretical framework for future experimental studies at the Super Tau-Charm Facility,providing valuable insights for symmetry investigations in the charm sector.更多还原

【Abstract】 Symmetry studies represent one of the most promising frontiers in particle physics research.This investigation focuses on exploring P and CP symmetries in the charm system through the measurement of asymmetry decay parameters in the three-body decay of Ξ_c~+.By incorporating electron and positron beam polarization effects and utilizing the helicity formalism,we characterize the decay of Ξ_c~+ and its secondary hyperons through asymmetry decay parameters.The complete angular distribution formula for these decays is systematically derived.Our study evaluates the sensitivity of the asymmetry parameters for the Ξ_c~+→Ξ~-π~+π~+ decay channel under various data sample sizes and beam polarization scenarios.The findings establish a robust theoretical framework for future experimental studies at the Super Tau-Charm Facility,providing valuable insights for symmetry investigations in the charm sector.更多还原