代表性论文

Chiral perturbation theory calculation for pn -> dpipi at threshold




作者: B. C. Liu, V. Baru, J. Haidenbaur and C. hanhart
发表/完成日期: 2011-08-06
期刊名称: Eur.Phys.J. A
期卷: 47
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论文简介
We investigate the reaction pn -> dpipi in the framework of Chiral Perturbation Theory. For the first time a complete calculation of the leading order contributions is presented. We identify various diagrams that are of equal importance as compared to those recognized in earlier works. The diagrams at leading order behave as expected by the power counting. Also for the first time the nucleon-nucleon interaction in the initial, intermediate and final state is included consistently and found to be very important. This study provides a theoretical basis for a controlled evaluation of the non-resonant contributions in two-pion production reactions in nucleon-nucleon collisions.