Gluons and the η′-nucleon coupling constant

被引：62

作者：

Bass, SD ^{[1
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

PHYSICS LETTERS B | 1999年 / 463卷 / 2-4期

关键词：

D O I：

10.1016/S0370-2693(99)00986-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We derive the effective chiral Lagrangian for low-energy eta-nucleon and eta'-nucleon interactions and show that gluonic degrees of freedom, via the axial U-A(1) anomaly, induce a contact term in the pp --> pp eta and pp --> pp eta' reactions. We then discuss the consequences for the extraction of g(eta'NN) from experimental data. (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：286 / 292

页数：7

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