MEASUREMENT OF THE P(GAMMA,PI-0) CROSS-SECTION AT THRESHOLD

被引：120

作者：

BECK, R

KALLEICHER, F

SCHOCH, B

VOGT, J

KOCH, G

STROHER, H

METAG, V

MCGEORGE, JC

KELLIE, JD

HALL, SJ

机构：

[1] UNIV MAINZ,INST KERNPHYS,W-6500 MAINZ,GERMANY

[2] UNIV GIESSEN,INST PHYS 2,W-6300 GIESSEN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.65.1841

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Differential and absolute cross sections for the reaction p(0) have been measured with energy-defined photons in the threshold region (E=131.4157.2 MeV). The E0+ amplitude has been extracted out of the data. The values found are in disagreement with predictions of low-energy theorems. © 1990 The American Physical Society.

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页码：1841 / 1844

页数：4

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