Tetraquarks in the 1/N expansion: A new appraisal

被引：14

作者：

Maiani, Luciano ^{[1
]}

Polosa, Antonio D. ^{[1
]}

Riquer, Veronica ^{[1
]}

机构：

[1] Sapienza Univ Roma, Dipartimento Fis, Piazzale Aldo Moro 2, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 05期

关键词：

BARYONS;

D O I：

10.1103/PhysRevD.98.054023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the necessary, albeit not sufficient, conditions for tetraquark poles to occur in the 1/N expansion of QCD and find the minimum order at which such poles may appear. Assuming tetraquark poles, we find a new nonplanar solution with the minimal number of topologies and tetraquark species. The solution implies narrow states. Mixing with quarkonium states is allowed so that P-wave tetraquarks with J(PC) = 1(-) would couple to e(+) e(-) .

引用

页数：6

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