ETA-PHOTOPRODUCTION FROM THRESHOLD THROUGH THE S11(1535) RESONANCE

被引：76

作者：

BENMERROUCHE, M

MUKHOPADHYAY, NC

机构：

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.67.1070

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study photoproduction of eta-mesons off protons in the effective Lagrangian approach. Unlike the pi-0-case, the eta-photoproduction at threshold is strongly dominated by resonance excitation. The quantity (chi-GAMMA-eta)1/2 A1/2/GAMMA-T, characteristic of the photoexcitation of the S11 (1535) resonance and its decay into the eta-nucleon channel, of interest to hadron models, is determined to be (0.22 +/- 0.02) x 10(-3) MeV-1 from the existing data.

引用

页码：1070 / 1073

页数：4

共 28 条

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