2024/04/12 by Shuang-Tao Wang, Su-Yan Pei, Wang, Shuang-Tao +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2404.08167
openalex publication_date 2024/04/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In 2021, a new charm-strange meson, Ds0(2590)+, has been discovered, it is believed to be the Ds+(21S0). However, its low mass and wide width are challenged by theoretical results. Given the small branching ratio of the current production channel, resulting in a small number of events and large errors. We suggest to search for the Ds0(2590)+ in the B meson nonleptonic decays, Bq→ D(*)qDs0(2590)+ (q=u,d), followed by Ds0(2590)+→ D^*K. We find Br(Bq→ D(*)qDs0(2590)+)× Br(Ds0(2590)+→ D*K)=(2.16∼2.82)× 10-3 is very large, and the result is not sensitive to the mass of Ds0(2590)+. Due to large branching ratio, large amount of Ds0(2590)+ events are expected. This study is based on the framework of instantaneous Bethe-Salpeter equation, and the used relativistic wave functions for mesons contain different partial waves. The contributions of different partial waves are also studied.