摘要

Exploring the fundamental properties of neutrinos has been one of the most challenging and inspirational field in physics and it links many areas of particle physics, nuclear physics, and astrophysics. Neutrinos gave us the first evidence of physics beyond the Standard Model: neutrinos are massive and mixed. We now measure the three-flavor mixing matrix to an amazing precision, especially given how weakly interacting neutrinos are. However, key fundamental questions such as the nature of neutrinos, absolute neutrino mass scale, neutrino mass hierarchy, and total number of flavors are still unanswered. The nature of neutrinos, i.e, whether neutrinos are their own anti-particles and how the neutrino mass is generated, is arguably the most critical questions in the field and can be probed with neutrinoless double-beta decay. Internationally, there are many experiments competing to push the half-life sensitivities to double-beta decay by another few orders of magnitude to discover or rule out the Majorana neutrinos in the inverted neutrino mass hierarchy region. I will give a brief review of the results and status of the active experimental programs. Special focus will be on the CUORE (Cryogenic Underground Observatory for Rare Events) experiment, which will search for the neutrinoless double beta decay of Te-130 using a bolometric technique.

报告人简介

Ke Han is currently an associate research scientist at Yale University and focuses his research on neutrino physics, especially neutrinoless double beta decay and sterile neutrino searches. He's a member of the CUORE experiment to search for neutrinoless double-beta decay of Te-130 with a large bolometer array. Since 2013, he serves a Physics Coordinator to oversee data analysis, simulation, and computing effort of the collaboration. More recently he started working on the PROSPECT project to search for sterile neutrinos and measure reactor neutrino spectrum precisely. He is a founding member of the collaboration and leading the design of photo multiplier tube assembly. He is also especially interested in characterizing liquid scintillator response to positrons and collaborating with the beam physics lab at Yale to develop a tunable mono-energetic positron beam for detector calibration.

Host：Xiangdong Ji xdji@sjtu.edu.cn