Study of the standard model with weak decays of charmed hadrons at BESIII  

作　　者：Hai-Bo Li Xiao-Rui Lyu 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《National Science Review》2021年第11期35-49,共15页国家科学评论（英文版）

基　　金：supported in part by the National Key Research and Development Program of China(2020YFA0406400);the National Natural Science Foundation of China(11822506,11875054,and 11935018);the Chinese Academy of Sciences(CAS)(QYZDJ-SSW-SLH003);the CAS Large-Scale Scientific Facility Program;the Fundamental Research Funds for the Central Universities.

摘　　要：A comprehensive review of weak decays of charmed hadrons(D^(0/)^(+),andΛ_(c)^(+))based on analyses of the threshold data from e^(+)e^(-)annihilation in the BESIII experiment is presented.Current experimental challenges and successes in understanding decays of the charmed hadrons are discussed.Precise calibrations of quantum chromodynamics and tests of the standard model are provided by measurements of purely leptonic and semi-leptonic decays of charmed hadrons,and lepton universality is probed in purely leptonic decays of charmed mesons to three generations of leptons.Quantum correlations in threshold data samples provide access to strong phases in the neutral D meson decays and probe the decay dynamics of the charmedΛ_(c)baryon.Charm physics studies with near-threshold production of charmed particle pairs are unique to BESIII,and provide many important opportunities and challenges.

关 键 词：charmed mesons charmed baryon leptonic decay semi-leptonic decay lepton flavor universality 

分 类 号：O572.3[理学—粒子物理与原子核物理]