2013/10/15 by B. R. Ko, Ko, B. R.
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1310.3891
openalex publication_date 2013/10/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using the full data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider, we present CP violation in charm decays. The D0-D0 mixing parameter yCP and indirect CP violation parameter AΓ in D0→ h+h- decays are reported, where h denotes K and π. The preliminary results are yCP=(1.11±0.22±0.11)% and AΓ=(-0.03±0.20±0.08)%. We also report searches for CP violation in D0→ h+h- and D+→ K0S K+ decays. No evidence for CP violation in D0→ h+h- is observed with AKKCP=(-0.32±0.21±0.09)% and AππCP=(+0.55±0.36±0.09)%. The CP asymmetry difference between D0→ K+K- and D0→π+π- decays is measured with Δ AhhCP=(-0.87±0.41±0.06)%. The CP asymmetry in D+→ K0S K+ decay is measured to be (-0.25±0.28±0.14)%. After subtracting CP violation due to K0-K0 mixing, the CP asymmetry in D+→K0 K+ decay is found to be (+0.08±0.28±0.14)%.