摘要
本文讨论了^(48)Ca无中微子发射的双β衰变中核心极化效应的贡献.计算表明:与短程关联及有限核子大小的效应相反,核心极化效应使总跃迁矩阵元增大,从而使中微子质量m_v或右手流混合参量η的上限减小8％左右.
Nuclear core polarization effect in neutrinoless nuclear double beta decay of _(?)Ca is discussed.Our calculations indicate that in contrast to the effect of either short-range correlation or finite nucleon size,the nuclear core polarization effect causes an enhancement of the total transition matrix element and hence a reduction of the upper limit of either the Majorana neutrino mass m_v or the mixture parameter η of the right-handed currents,of about 8%
出处
《高能物理与核物理》
CSCD
北大核心
1989年第12期1083-1088,共6页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
