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
收藏
页码：1 / 14
页数：14
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