The c-Term of the Tucson-Melbourne Three-Body Force: To Be or Not to Be
The c-Term of the Tucson-Melbourne Three-Body Force: To Be or Not to Be
复制标题
图森-墨尔本三体部队的 c 术语：生存还是毁灭
DOI：
10.1007/s006010170021
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发表时间：
1999
期刊：
影响因子：
1.6
通讯作者：
Usa
中科院分区：
文献类型：
--
作者：
H. Kamada;D. Hüber;A. N. I. F. T. Physik;Ruhr;Bochum;Germany Institut fuer Strahlen;Bonn;Germany Theoretical Division;L. Laboratory;L. Alamos;New Mexico.;Usa
通过~3H的Faddeev计算，我们研究了结合能与三核子力的关系。我们采用2π交换的图森-墨尔本三核子力，从唯象的角度研究了三体力算符(a项、b项、c项和d项)对强度的依赖关系。虽然众所周知，在获得实验结合能时，a项不如b项和d项重要，但我们为c项找到了两个解，一个在原始图森-墨尔本模型中使用的值附近，另一个接近于零的新解。采用修正的图森-墨尔本模型的张量分析功率T_(20)很好地描述了数据，它遵循手征微扰理论的建议，即应该去掉短程。
By Faddeev calculations of3H we study the dependence of the binding energy on the three-nucleon force. We adopt the 2π-exchange Tucson-Melbourne three-nucleon force and investigate phenomenologically the dependence on the strength of the individual three-body force operators (thea-,b-,c-, andd-terms). While it is well known that thea-term is not as important as theb- andd-terms to gain the experimental binding energy, we find two solutions for thec-term, one around the value used in the original Tucson-Melbourne model and a new one close to zero. A tensor-analyzing powerT20of thepdelastic scattering using the modified Tucson-Melbourne model, which follows the recommendation by chiral perturbation theory that the short-rangec-term should be dropped, describes the data well.