IS THERE A SCALAR FORM-FACTOR SUPPRESSION OF THE NUCLEON SIGMA-TERM

被引：6

作者：

COON, SA ^{[1
]}

SCADRON, MD ^{[1
]}

机构：

[1] UNIV ARIZONA, DEPT PHYS, TUCSON, AZ 85721 USA

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 1992年 / 18卷 / 12期

关键词：

D O I：

10.1088/0954-3899/18/12/008

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：

It is shown that three low-energy theorems for piN scattering can be combined with the DELTA(1232) dominance of the piN background amplitudes to describe the observed low-energy piN data. The resulting analysis does not suppress the sigma-term below its measured value of sigma(N) almost-equal-to 60 MeV, nor does a recently proposed scalar form-factor t-dependence of sigma(N)(t) emerge from piN data.

引用

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页码：1923 / 1931

页数：9

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