The ηNN coupling constant -: art. no. 065205

被引：25
|
作者：
Zhu, SL [1 ]
机构：
[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
来源：
PHYSICAL REVIEW C | 2000年 / 61卷 / 06期
关键词：
D O I：
10.1103/PhysRevC.61.065205
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 derive the light cone QCD sum rule for the eta NN coupling constant g (eta NN). The contribution from the excited states and the continuum is subtracted cleanly through the double Borel transform with respect to the two external momenta. p(1)(2),p(2)(2) = (p - q)(2). Our result is alpha (eta NN) = (0.3+/-0.15), which favors small values used in the literature.
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页数：6
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