The narrow pentaquark

被引：0
|
作者：
Diakonov, Dmitri [1 ]
机构：
[1] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia
来源：
Quark Confinement and the Hadron Spectrum VII | 2007年 / 892卷
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The experimental status of the pentaquark searches is briefly reviewed. Recent null results by the CLAS collaboration are commented, and new strong evidence of a very narrow Theta(+) resonance by the DIANA collaboration is presented. On the theory side, I revisit the argument against the existence of the pentaquark - that of Callan and Klebanov - and show that actually a strong resonance is predicted in that approach, however its width is grossly overestimated. A recent calculation gives 2 MeV for the pentaquark width, and this number is probably still an upper bound [1].
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页码：258 / 261
页数：4
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