Density Dependence of the Beta Decay Width in Astronuclear Matter
YUAN Wei1, LIU Yu-Xin1,2,3,4
1Department of Physics, Peking University, Beijing 100871
2Key Laboratory of Heavy Ion Physics of Ministry of Education, Peking University, Beijing 100871
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
Density Dependence of the Beta Decay Width in Astronuclear Matter
YUAN Wei1;LIU Yu-Xin1,2,3,4
1Department of Physics, Peking University, Beijing 100871
2Key Laboratory of Heavy Ion Physics of Ministry of Education, Peking University, Beijing 100871
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
Abstract： By combining the four-fermion interaction theory and the linear σ-ω model, we propose an approach to describe the density dependence of the β-decay width (the half-life time of the decay) in infinite and charge-neutral nuclear matter. We find that the half-life time of the β-decay decreases rapidly with the increase of the nuclear matter density.
YUAN Wei;LIU Yu-Xin;;. Density Dependence of the Beta Decay Width in Astronuclear Matter[J]. 中国物理快报, 2004, 21(6): 1027-1030.
YUAN Wei, LIU Yu-Xin, ,. Density Dependence of the Beta Decay Width in Astronuclear Matter. Chin. Phys. Lett., 2004, 21(6): 1027-1030.
2004, Vol. 21 
