主題：The Status and Prospects of the Belle II Experiment
講座摘要：In April 2019, the complete Belle II detector began its first physics run at the asymmetric energy e+e- SuperKEKB collider located in Tsukuba, Japan. The Belle II experiment aims at collecting an integrated luminosity of 50 ab-1, 50 times larger than its predecessor, Belle. The dataset collected in the running of 2019 corresponds to 10.57 fb-1, which not sufficient to probe new territory, but very useful for assessing the performance of the detector and rediscovering many known standard model processes. I will review the most significant physics results produced in the last few months, which include the observation of many particles and decay channels important for the Belle II physics program, and present an outlook for the short term prospects for the experiment.
主講人簡介：單葳，2017年北京大學博士畢業，2017-2019年湖南師范大學講師，2019年至今在名古屋大學做訪問學者，發表多篇學術論文，代表性論文為(1) M. Ablikimet al., (BESIII Collaboration), "Observation of a Neutral Structure near theDˉD_Mass Threshold ine+e?!(DˉD_)0_0atps= 4.226 GeV andps= 4.257 GeV", Phys. Rev. Lett.115, 222002 (2015). (Corresponding Author)
(2) Wei Shan, "ExoticZcstates at BESIII", AIP Conf. Proc.1735, 060001 (2016).
(3) Wei Shan, "XYZ states at BESIII", Nucl. Part. Phys. Proc.78, 282 (2017).
(4) M. Ablikimet al., (BESIII Collaboration), "Measurement of the Absolute Branching
Fraction of the Inclusive Decay _+c!_ + X", Phys. Rev. Lett.121, 062003 (2018).
(5) M. Ablikimet al., (BESIII Collaboration), "Observation ofe+e?!D+sˉD(_)0K?and study of the P-waveDsmesons", Chin. Phys. C43, 031001 (2019).