摘要
本文计算了π介子单电荷交换机制对传递重中微子的0νββ衰变振幅的贡献,并与以前的π介子双电荷交换机制下的计算结果进行了比较,我们发现:对此衰变有重要贡献的π介子自由度只是π介子双电荷交换机制.
In this paper we calculate the contribution to the amplitude of 0v33 decay, which is mediated by the heavy neutrino, from the mechanism of pion-single-charge-exchange and compare it with the contribution from the mechanism of the pion-double-charge-exchange. We find that the substantial contribution of the pion degree of freedom to 0v33 decay in nuclei is only from the mechanism of the pion-double-charge-exchange.
出处
《高能物理与核物理》
CSCD
北大核心
1989年第8期714-718,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
