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Abstract:
The observation of neutrinoless double-beta decay would offer proof of lepton number violation, demonstrating that neutrinos are Majorana particles, while also helping us understand why there is more matter than antimatter in the Universe. If the decay is driven by the exchange of the three known light neutrinos, a discovery would, in addition, link the observed decay rate to the neutrino mass scale through a theoretical quantity known as the nuclear matrix element (NME). Accurate values of the NMEs for all nuclei considered for use in experiments are therefore crucial for designing and interpreting those experiments. In this talk, I will introduce briefly the history and current research status on modeling the NMEs of neutrinoless double-beta decay, highlight the efforts to resolve the discrepancy among different nuclear models, and demonstrate the potential to achieve an accurate description of the NMEs by employing strong and weak interactions derived consistently from chiral effective field theory.
Biography:
尧江明是中山大学教授。他于2004年获得南开大学的学士学位，并于2009年从北京大学获得粒子物理与核物理博士学位。先后在西南大学、布鲁塞尔自由大学、日本东北大学、北卡罗来纳大学教堂山分校和密歇根州立大学从事科研工作。他于2021年加入中山大学担任全职教授。尧教授主要从事原子核结构与衰变等方面课题研究，先后发展了原子核多参考态协变密度泛函理论以及介质生成坐标方法，并将其应用于原子集体激发、无中微子双贝塔衰变以及超核结构等课题研究，首次实现了候选核无中微子双贝塔衰变核矩阵元的相对论描述以及“第一性原理”计算。在Physical Review Letters ，Physics Letters B, Physical Review C等核物理期刊上发表论文100+篇，受邀在Progress in Particle and Nuclear Physics期刊撰写无中微子双贝塔衰变核矩阵元方面的综述论文。
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