地下实验室^(96)Zr无中微子双贝塔衰变实验研究进展

Research status of neutrinoless double-beta decay of ^(96)Zr in underground laboratory

无中微子双贝塔衰变实验是为了找寻超出标准模型的新物理(new physics beyond the standard model)而在地下实验室开展的最具潜力的低本底前沿物理实验之一。符合无中微子双贝塔衰变实验要求的核素有^(76)Ge、^(96)Zr、^(100)Mo、^(130)Te、^(136)Xe等,其中^(96)Zr具有独特的理论优势,但相关实验较少。该文从理论上分析^(96)Zr无中微子双贝塔衰变的高事例发生率、强中微子质量限制能力和潜在发生无中微子四贝塔衰变的特点及实验本底要求,阐述地下实验室^(96)Zr无中微子双贝塔衰变实验研究现状,展望未来在中国锦屏地下实验室开展^(96)Zr无中微子双贝塔衰变实验的愿景。

In order to find new physics beyond the standard model,the neutrinoless double-beta(0νββ)decay experiment is one of the most potential low background frontier physics experiments carried out in the underground laboratory.The nuclides which are capable of 0νββ decay experiment include ^(76)Ge,^(96)Zr,^(100)Mo,^(130)Te,^(136)Xe,etc.,though ^(96)Zr has many unique theoretical advantages,the experiment with ^(96)Zr has not been widely carried out.This paper theoretically analyzes the high occurrence rate,strong neutrino mass confinement and potential 0ν4β decay of ^(96)Zr and its corresponding experimental background requirements.The research status of 0νββ decay experiments using ^(96)Zr in the underground laboratory is summarized.This paper prospects the plan for China Jinping Underground Laboratory(CJPL)in which 0νββ decay experiment based on ^(96)Zr will be performed in the future.