期刊
COMMUNICATIONS IN THEORETICAL PHYSICS
卷 71, 期 11, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0253-6102/71/11/1319
关键词
Tetraquark state; QCD sum rules
资金
- National Natural Science Foundation [11775079]
In this article, we separate the vector and axialvector components of the tensor diquark operators explicitly, construct the axialvector-axialvector type and vector-vector type scalar tetraquark currents and scalar-tensor type tensor tetraquark current to study the scalar, vector and axialvector tetraquark states with the QCD sum rules in a consistent way. The present calculations do not favor assigning the Z(c)(4100) to be a scalar or vector tetraquark state. If the Z(c)(4100) is a scalar tetraquark state without mixing effects, it should have a mass about 3.9 GeV or 4.0 GeV rather than 4.1 GeV; on the other hand, if the Z(c)(4100) is a vector tetraquark state, it should have a mass about 4.2 GeV rather than 4.1 GeV. However, if we introduce mixing, a mixing scalar tetraquark state can have a mass about 4.1 GeV. As a byproduct, we obtain an axialvector tetraquark candidate for the Z(c)(4020).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据