Charm physics at BESIII

7th International Conference on Beauty, Charm, and Hyperons in Hadronic Interactions

Weidenkaff, P.^1

Institut für Kernphysik, Johann-Joachim-Becher-Weg 45, Mainz

55128, Germany^1

关键词: Charm physics;    Charm quarks;    Decay constants;    Decay topology;    Form factors;    Leptonic decay;    Model independent;    Phase difference;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/770/1/012012/pdf
DOI  :  10.1088/1742-6596/770/1/012012

来源: IOP

【 摘 要 】

The study of mesons and baryons which contain at least one charm quark is referred to as open charm physics. It offers the possibility to study up-type quark transitions. Since the c quark can not be treated in any mass limit, theoretical predictions are difficult and experimental input is crucial. BESIII collected large data samples of e+e- collisions at several charm thresholds. The at-threshold decay topology offers special opportunities to study open charm decays. We present a selection of recent BESIII results. The D+sdecay constant is measured using the leptonic decays to μ+ν and τ+ν. Using the semi-leptonic decays of D0and Dto Ke+νeand πe+νe, a measurement of the form factors f+K(q2) and f+π(q2) is performed and furthermore, we show preliminary results of a model independent measurement of the strong phase difference between D0and D0in the channel D0→ Ks0π+π-which is an experimental input to the measurement of the CKM angle γ/φ3.