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Neutron-neutron fusion

被引：10
作者：
Ando, S
Kubodera, K
机构：
[1] TRIUMF, Theory Grp, Vancouver, BC V6T 2A3, Canada
[2] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA
来源：
PHYSICS LETTERS B | 2006年 / 633卷 / 2-3期
基金：
美国国家科学基金会; 加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/j.physletb.2005.11.085
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The neutron-neutron fusion process, nn -> dev, at very low neutron energies is studied in the framework of pionless effective field theory that incorporates dibaryon fields. The cross section and electron energy spectrum for this process are calculated up to next-to-leading order. We include the radiative corrections of 0(a) calculated for the one-body transition amplitude. The precision of our theoretical estimates is found to be governed essentially by the accuracy with which the empirical values of the neutron-neutron scattering length and effective range are currently known. Also discussed is the precision of theoretical estimates of the transition rates of related electroweak processes in few-nucleon systems. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：253 / 259
页数：7
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