2019/03/26 by Hsiang-nan Li, Cai-Dian Lü, Li, Hsiang-nan +3
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1903.10638
openalex publication_date 2019/03/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
Very recently, the LHCb Collaboration observed the CP violation (CPV) in the charm sector for the first time, with ΔACP\rm dir≡ ACP(D0→ K+K-)-ACP(D0→ π+π-)=(-1.54±0.29)×10-3. This result is consistent with our prediction of ΔACP\rm SM=(-0.57∼ -1.87)× 10-3 obtained in the factorization-assisted topological-amplitude (FAT) approach in [PRD86,036012(2012)]. It implies that the current understanding of the penguin dynamics in charm decays in the Standard Model is reasonable. Motivated by the success of the FAT approach, we further suggest to measure the D+→ K+K-π+ decay, which is the next potential mode to reveal the CPV of the same order as 10-3.