In the original Standard Model of particle physics, there are three massless and active neutrino flavors in nature. The discovery of oscillations between neutrino flavors in the past 15 years has firmly established that neutrinos are massive particles, and each flavor is a mixture of three mass quantum states. Such mixing can be parameterized by three Euler angles. To date, all three mixing angles have been measured, including the recent discovery of q13 at Daya Bay.
On the other hand, the road to discovery in neutrino physics is usually tortuous. This talk will start with a few historical anomalies in neutrino physics, some with happy endings, some not. In the second half of this talk, I will explain an on-going anomaly that is related to the hypothetical sterile neutrinos, and discuss a new experiment under preparation that may help to solve this mystery.
刘江来，1998年南京大学物理系本科，2006年美国马里兰大学物理学博士。2006-2010年加州理工学院博士后、资深博士后。2011年被聘为上海交通大学物理系特别研究员、博士生导师。研究领域为实验粒子物理。他在原子核与粒子物理微小参数的精确测量领域有丰富的研究实践，是多个国际合作实验的核心成员。在一流SCI杂志上发表论文20余篇，其中毕业论文结果（物理评论快报2005）单篇引用率140,并以第一作者发表物理评论快报一篇（2010），物理评论C一篇（2007)。在国际大型会议上多次给邀请报告。