2018/12/09 by P. K. Resmi, Resmi, P. K.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1812.03440
openalex publication_date 2018/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The CKM angle \φ3 is less precisely known than the angle \φ1 and\nthe only one that is accessible with tree-level decays in a theoretically clean\nway. The key method to measure \φ3 is through the interference between\nB+\→ D0 K+ and B+ \→ D0 K+ decays which occurs if the final\nstate of the charm-meson decay is accessible to both the D0 and D0\nmesons. To achieve the best sensitivity, a large variety of D and B decay\nmodes is required, which is possible at Belle experiment as almost any final\nstate can be reconstructed including those with photons. The results from\nBelle, as well as the ongoing studies, are discussed here. The details of the\nplanned measurement at Belle II, a substantial upgrade of the Belle detector\nwhich will operate at the SuperKEKB energy-asymmetric e+ e- collider, are\nalso discussed. The results from the first collisions at Belle II during\nApril-July 2018 are shown too.\n