PI-NN COUPLING FROM HIGH-PRECISION NP CHARGE-EXCHANGE AT 162 MEV

被引：64

作者：

ERICSON, TEO

LOISEAU, B

NILSSON, J

OLSSON, N

BLOMGREN, J

CONDE, H

ELMGREN, K

JONSSON, O

NILSSON, L

RENBERG, PU

RINGBOM, A

RONNQVIST, T

TIBELL, G

ZORRO, R

机构：

[1] DEPT THEORET PHYS, S-75108 UPPSALA, SWEDEN

[2] INST PHYS NUCL LYON, DIV PHYS THEOR, F-91406 ORSAY, FRANCE

[3] UNIV PARIS 06, LPTPE, F-75252 PARIS 05, FRANCE

[4] UNIV UPPSALA, DEPT NEUTRON RES, S-75121 UPPSALA, SWEDEN

[5] UNIV UPPSALA, SVEDBERG LAB, S-75121 UPPSALA, SWEDEN

[6] UNIV UPPSALA, DEPT RADIAT SCI, S-75121 UPPSALA, SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.75.1046

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Differential np cross sections for unpolarized neutrons of 162 MeV have been measured to high precision with particular attention to the absolute normalization. These data can be extrapolated precisely and model independently to the pion pole and give a pi NN coupling constant g(2) = 14.62 +/- 0.06 +/- 0.29 or f(2) = 0.0808 +/- 0.0003 +/- 0.0017. This is higher than recently suggested values.

引用

页码：1046 / 1049

页数：4

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