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Convergence of effective radius expansion for doublet nd-scattering and its parameters from analysis of present-day calculation resultsстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Orlov Yu V., Orevkov Yu P.
- Журнал: Bulletin of the Russian Academy of Sciences: Physics
- Том: 69
- Номер: 1
- Год издания: 2005
- Издательство: Allerton Press Inc.
- Местоположение издательства: United States
- Первая страница: 149
- Последняя страница: 156
- Аннотация: It is shown that for the doublet nd-scattering the convergence domain of expansion of the effective radius function K(k 2)= k cot δ(E) with a pole is limited by a complex energy region with a radius corresponding to the nearest singularity of the one-nucleon exchange Feynman diagram. The results of the present-day three-body calculation of the doublet S phase δ(E) at small energy with charge-dependent NN-interaction AV18 and AV18+(3N) are used to evaluate K(k 2) parameters. The results of the calculation of δ(E) and virtual triton pole position by the N/D method are considered for comparison. Calculations by the two-body model with different potentials are also performed. The K(k 2) parameters are found by fitting B v and ε t. A good description of δ(E) is obtained, which is confirmed by a comparison with the exact calculation for the Hulthen potential. © 2005 by Allerton Press, Inc.
- Добавил в систему: Орлов Юрий Всеволодович