Nuclear and Particle Physics Colloquium 66(核与粒子物理学术报告会66)
Speaker: Prof. Xiao-Rui Lyu, University of Chinese Academy of Sciences
Place:Room 513, Main Building, Beihang University
Time:10:30-12:00, November 21, 2018
Title:Charmed hadron decays studied at the BESIII experiment and beyond
Abstract：
The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) has accumulated the world's largest samples of $e^+e^-$ collisions in the tau-charm region. Based on the samples taken at $/psi(3770)$ peak, at 4178MeV, and at the $/Lambda^+_c/Lambda^-_c$ mass threshold 4599 MeV, we can study the charmed hadron decays under a uniquely clean background. In this talk, we will review the recent results on the $D$, $D_s$ and $/Lambda_c$ decays, such as the analyses of the purely leptonic and semi-leptonic decays of D meson, the measurements on strong phase and $D^0-/bar{D}{}^0$ mixing parameters using quantum coherence at threshold, $D$ Dalitz analyses, determination on the absolute branching fraction of $/Lambda_c$ hadronic decays and first model-independent study on the semi-leptonic $/Lambda_c$ decay rate $/mathcal{B}(/Lambda_c^+ /to /Lambda e^+ /nu$). In the final remarks, the prospects in the BESIII and future super tau-charm experiment will be discussed.
About speaker:
Dr. Xiao-Rui Lyu completed the undergraduate and master course in Peking University, before he moved to Tokyo Institute of Technology, Japan, and obtained doctor degree in fundamental physics in 2008. Afterward, he joined the experimental high energy group in the University of Chinese Academy of Sciences. His research effort focuses on to understand the origin of the world by the experimental probe to the fundamental structure and their interactions of particles. He works in the BESIII project in BEPCII facility in China, and the LHCb project in CERN in Switzerland. He is now physics coordinator of the BESIII collaboration.
