Mass spectra for qc(q)over-bar(c)over-bar, sc(s)over-bar(c)over-bar, qb(q)over-bar(b)over-bar, sb(s)over-bar(b)over-bar tetrquark states with JPC=0++ and 2++

被引：37
作者：
Chen, Wei [1 ,2 ]
Chen, Hua-Xing [3 ,4 ]
Liu, Xiang [5 ,6 ,7 ]
Steele, T. G. [1 ]
Zhu, Shi-Lin [8 ,9 ,10 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys, Guangzhou 510275, Guangdong, Peoples R China
[2] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada
[3] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China
[4] Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China
[5] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
[6] Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
[7] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[8] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[9] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[10] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW D | 2017年 / 96卷 / 11期
基金：
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词：
QCD SUM-RULES; QUARK MASS; X(4500);
D O I：
10.1103/PhysRevD.96.114017
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have studied the mass spectra of the hidden-charm/bottom qc (q) over bar(c) over bar, sc (s) over bar(c) over bar and qb (q) over bar(b) over bar, sb (s) over bar(b) over bar tetraquark states with J(PC) = 0(++) and 2(++) in the framework of QCD sum rules. We construct ten scalar and four tensor interpolating currents in a systematic way and calculate the mass spectra for these tetraquark states. The X* (3860) may be either an isoscalar tetraquark state or chi(c0)(2P) If the X* (3860) is a tetraquark candidate, our results prefer the 0(++) option over the 2(++) one. The X* (4160) may be classified as either the scalar or tensor qc (q) over bar(c) over bar tetraquark state, while the X *(3915) favors a 0(++) qc (q) over bar(c) over bar or sc (s) over bar(c) over bar tetraquark assignment over the tensor one. The X *(4350) cannot be interpreted as a scsc tetraquark with either J(PC) = 0(++) 2(++).
引用
收藏
页数：17
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