SPIN ISOSPIN CORRELATION AND MULTINUCLEON EFFECTS IN ETA-MESON PRODUCTION BY PIONS ON HE-3

被引：9

作者：

LIU, LC

机构：

来源：

PHYSICS LETTERS B | 1992年 / 288卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)91948-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Pion-induced eta-production on a pair of nucleons is shown to be as important as the one-step pi-eta conversion on a single nucleon. The dominant two-nucleon contribution comes from the pi(NN)J=0,I=1 --> eta(NN)J=0,I'=1 transition. Because of the large cancellation among various three-nucleon amplitudes, the effect of three-nucleon processes on the eta-production cross sections is much smaller than that of the two-nucleon processes.

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页码：18 / 22

页数：5

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