BESIII粲物理

Charm physics at BESIII

摘要: 分析BESIII探测器在质心系能量3773和4599 GeV采集的293和0567 fb-1数据，报道了衰变常数fD+和D介子半轻子衰变的形状因子，D+→K0Sπ+π0的Dalitz图分析，D→K0S/Lπ+π-和K-π+强相差，D0D0混合参数yCP的测量；2体强子衰变D0(+)→ωπ0(+)，稀有衰变D0→γγ和D+→K(π)±ee+的寻找以及Λ+c→Λe+νe和12个强子衰变绝对分支比的测量.

Abstract: Based on 293 and 0567 fb-1 data taken at the center-of-mass energies s=3773 and 4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+→K0Sπ+π0, the strong phase differences in D→K0S/Lπ+π- and K-π+, the D0D0 mixing parameter yCP, the searches for 2-body hadronic decays D0(+)→ωπ0(+), rare decays of D0→γγ and D+→K(π)±ee+ as well as the significant improved measurements of the absolute branching fractions for Λ+c→Λe+νe and 12 hadronic final states.