Updated model-independent measurement of the strong-phase differences between D⁰ and D⁰ → K⁰_S/Lπ⁺π^- decays

2025/03/28 by M. Ablikim, BESIII Collaboration, Ablikim, M. +782
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #Neutrino Physics Research

paper · doi:10.48550/arxiv.2503.22126

Abstract

The strong-phase differences between D⁰→ K_S/L⁰π⁺π^- and D⁰→ K_S/L⁰π⁺π^- decays are one of the most important inputs in measuring the C P violating angle γ via B^- → D K^- decays. They also play a key role in studies of charm mixing and indirect C P violation. In this paper, the strong-phase differences are determined in a model-independent way with quantum-correlated D⁰-D⁰ decays from 7.93 fb^-1 of e⁺e^- annihilation data at √(s)=3.773 GeV by the BESIII experiment. These results are the most precise to date and are expected to significantly reduce associated uncertainties in determining the C P violating angle γ and related charm mixing parameters.

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