Chiral structure of vector and axial-vector tetraquark currents

被引：10

作者：

Chen, Hua-Xing ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China

[2] Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 11期

基金：

中国国家自然科学基金;

关键词：

MULTIQUARK HADRONS; QUARK CONDENSATE; SUM-RULES; QCD; SYMMETRY; ANNIHILATION; MESONS; STATE; REST; ETA;

D O I：

10.1140/epjc/s10052-013-2628-y

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate the chiral structure of local vector and axial-vector tetraquark currents, and study their chiral transformation properties. We consider the charge-conjugation parity and classify all the isovector vector and axial-vector local tetraquark currents of quantum numbers I (G) J (PC) =1(-)1(-+), I (G) J (PC) =1(+)1(--), I (G) J (PC) =1(-)1(++) and I (G) J (PC) =1(+)1(+-). We find that there is a one to one correspondence among them. Using these currents, we perform QCD sum rule analyses. Our results suggest that there is a missing b (1) state having I (G) J (PC) =1(+)1(+-) and a mass around 1.47-1.66 GeV.

引用

页码：1 / 14

页数：14

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