FINITE 3-PI CUT APPROXIMATION FOR THE PI-N(N)OVER-BAR FORM-FACTOR

被引：1

作者：

BOLOKHOV, AA ^{[1
]}

ZOVKO, N ^{[1
]}

机构：

[1] RUDJER BOSKOVIC INST, ZAGREB, CROATIA

来源：

PHYSICAL REVIEW C | 1994年 / 50卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.50.24

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Assuming the length of the 3pi cut to be finite and approximating the integrated 4pi amplitude by a constant, we derive an expression for the piNNBAR form factor which is very close to that given by a simple pole. The specific predictions of the obtained form factor for the region of small momentum transfer are compared with existing effective pole formulas and discussed along the lines of the Goldberger-Treiman relation.

引用

页码：24 / 30

页数：7

共 21 条

[1] DETERMINATION OF THE PI-NN COUPLING-CONSTANT FROM ELASTIC PION-NUCLEON SCATTERING DATA [J].