The role of hyperon resonances in p(γ, K+)Λ processes

被引：62

作者：

Janssen, S ^{[1
]}

Ryckebusch, J ^{[1
]}

Van Nespen, W ^{[1
]}

Debruyne, D ^{[1
]}

Van Cauteren, T ^{[1
]}

机构：

[1] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

来源：

EUROPEAN PHYSICAL JOURNAL A | 2001年 / 11卷 / 01期

关键词：

D O I：

10.1007/s100500170100

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：

We discuss the role of hyperon resonances in the u-channel when modeling p (gamma, K+) A processes in an effective Lagrangian approach. Without the introduction of hyperon resonances, one is forced to use soft hadronic form factors with a cutoff mass which is at best two times the kaon mass. After inclusion of the hyperon resonances in the u-channel, we obtain a fair description of the data xith a cutoff mass of the order of 1.8 GeV.

引用

页码：105 / 111

页数：7

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