BESⅢ粲物理（英文）  

Charm physics at BESⅢ

作　　者：马海龙[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049

出　　处：《中国科学技术大学学报》2016年第5期358-368,共11页JUSTC

基　　金：Supported by the National Natural Science Foundation of China(10935007,11305180);the National Program on Key Basic Research Project of China(973 Program)(2009CB825200,2015CB856700)

摘　　要：分析BESIII探测器在质心系能量3.773和4.599GeV采集的2.93和~0.567fb-1数据,报道了衰变常数fD^+和D介子半轻子衰变的形状因子,D^+→K^0_Sπ^+π~0的Dalitz图分析,D→K^0_S/Lπ^+π-和K-π^+强相差,D^0D^0混合参数yCP的测量;2体强子衰变D^0(^+)→ωπ~0(^+),稀有衰变D^0→γγ和D^+→K(π)±ee^+的寻找以及Λ^+c→Λe^+νe和12个强子衰变绝对分支比的测量.Based on 2.93 and ~0.567fb^(-1) data taken at the center-of-mass energies s^(1/2)=3.773and4.599 GeV with the BESⅢ detector,we report the precise measurements of the decay constant f D^+,the form factors of D semileptonic decays,the Dalitz plot analysis of D^+→K^0Sπ^+π~0,the strong phase differences in D →K^0_S/Lπ^+π-and K-π^+,the D^0D^0 mixing parameter yCP,the searches for 2-body hadronic decays D^0(^+)→ωπ~0(^+),rare decays of D^0→γγand D^+→K(π)±e e^+as well as the significant improved measurements of the absolute branching fractions forΛ^+c→Λe^+νe and 12 hadronic final states.

关 键 词：粲介(重)子 纯轻和半轻子衰变 强子衰变 稀有衰变 衰变常数 形状因子 强相角 夸克混合矩阵 

分 类 号：O572.33[理学—粒子物理与原子核物理]