Partial-Wave Decomposition for Meson-Exchange Currents in Few-Nucleon Systems
نویسندگان
چکیده
منابع مشابه
A pr 1 99 9 Partial Wave Decomposition for Meson Exchange Currents in Few - Nucleon Systems
We develop an approach for calculating matrix elements of meson exchange currents between 3N basis states in (jJ)–coupling and a 3N bound state. The contribution generated by π– and ρ-exchange are included in the consideration. The matrix elements are expressed in terms of multiple integrals in the momentum space. We apply a technique of the partial wave decompositions and carry out some angula...
متن کامل1 M ar 1 99 9 Partial Wave Decomposition for Meson Exchange Currents in Few - Nucleon Systems
We develop an approach for calculating matrix elements of meson exchange currents between 3N basis states in (jJ)–coupling and a 3N bound state. The contribution generated by π– and ρ-exchange are included in the consideration. The matrix elements are expressed in terms of multiple integrals in the momentum space. We apply a technique of the partial wave decompositions and carry out some angula...
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Our current understanding of the structure of nuclei with A ≤ 8, including energy spectra, electromagnetic form factors, and weak transitions, is reviewed within the context of a realistic approach to nuclear dynamics based on two-and three-nucleon interactions and associated electro-weak currents. Low-energy radiative and weak capture reactions of astrophysical relevance involving these light ...
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Following recent studies of non–relativistic reductions of the single–nucleon electromagnetic current operator, here we extend the treatment to include meson exchange current operators. In contrast to the traditional scheme where approximations are made for the transferred momentum, transferred energy and momenta of the initial–state struck nucleons, we treat the problem exactly for the transfe...
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The meson-exchange current in nuclei, a long-standing problem in nuclear physics, is described in modern theory of strong interactions, namely, QCD expressed in terms of effective chiral Lagrangian field theory. Some old results are given a modern interpretation and some new results are predicted. Among the topics treated are an accurate calculation of the radiative np capture process at therma...
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ژورنال
عنوان ژورنال: Few-Body Systems
سال: 2000
ISSN: 0177-7963,1432-5411
DOI: 10.1007/s006010070029