2020/08/10 by F. Abudinén, I. Adachi, Abudinén, F. +638
Computer Science · Decision Sciences · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Scientific Computing and Data Management
paper · pdf · doi:10.48550/arxiv.2008.03873
openalex publication_date 2020/08/10 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
We utilize a sample of 34.6 fb-1, collected by the Belle II experiment at the SuperKEKB asymmetric energy e+e- collider, to search for the B+ → ϕK+, B+ → ϕK*+, B0 → ϕK0S, and B0 → ϕK*0 decays. Charmless hadronic B decays represent an important part of the Belle II physics program, and are an ideal benchmark to test the detector capabilities in terms of tracking efficiency, charged particle identification, vertexing, and advanced analysis techniques. Each channel is observed with a significance that exceeds 5 standard deviations, and we obtain measurements of their branching ratios that are in good agreement with the world averages. For the B → ϕK^* modes, we also perform a measurement of the longitudinal polarization fraction fL.