a(1) (1420) resonance as a tetraquark state and its isospin partner
文献类型：期刊论文
| 作者 | Chen, Hua-Xing1,2; Cui, Er-Liang1,2; Chen, Wei3; Steele, T. G.3; Liu, Xiang4,5,6,7; Zhu, Shi-Lin8,9,10,11 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2015-05-20 |
| 卷号 | 91页码:13 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/PhysRevD.91.094022 |
| 英文摘要 | We systematically construct tetraquark currents of I(G)J(PC) = 1(-)1(++) and classify them into types A ( antisymmetric), S ( symmetric) and M ( mixed), based on flavor symmetries of diquarks and antidiquarks composing the tetraquark currents. We use tetraquark currents of type M to perform QCD sum rule analyses, and find a tetraquark current eta(M)(5 mu) with quark content qs (q) over bar(s) over bar (q = u or d) leading to a mass of 1.44 +/- 0.08 GeV consistent with the a(1)(1420) state recently observed by the COMPASS Collaboration. Our results support tetraquark explanations for both a(1)(1420) and f(1)(1420), assuming that they are isospin partners. We also study their possible decay patterns. As tetraquark candidates, the possible decay modes of a(1)(1420) are S- wave a(1)(1420) -> K*(892)K and P-wave a(1)(1420) -> f(0)(980)pi, while the possible decay patterns of f(1)(1420) are S-wave f(1)(1420) -> K*(892)K and P-wave f(1)(1420) -> a(0)(980)pi. We speculate that a(1)(1420) is partly responsible for the large isospin violation in the eta(1405) -> f(0)(980)pi(0) decay mode, which is reported by BESIII Collaboration in the J/psi -> gamma 3 pi process. |
| WOS关键词 | QCD SUM-RULES ; QUARK CONDENSATE ; GLUON CONDENSATE ; E(1420) MESON |
| 资助项目 | National Natural Science Foundation of China[11205011] ; National Natural Science Foundation of China[11475015] ; National Natural Science Foundation of China[11375024] ; National Natural Science Foundation of China[11222547] ; National Natural Science Foundation of China[11175073] ; National Natural Science Foundation of China[11261130311] ; Ministry of Education of China (SRFDP)[20120211110002] ; Fok Ying-Tong Education Foundation[131006] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Ministry of Education of China (Fundamental Research Funds for the Central Universities) |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000354983200003 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; Ministry of Education of China (SRFDP) ; Fok Ying-Tong Education Foundation ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Ministry of Education of China (Fundamental Research Funds for the Central Universities) |
| 源URL | [http://119.78.100.186/handle/113462/39762]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Chen, Wei |
| 作者单位 | 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 3.Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada 4.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China 5.Lanzhou Univ, Ctr Hadron, Lanzhou 730000, Peoples R China 6.Lanzhou Univ, 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.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hua-Xing,Cui, Er-Liang,Chen, Wei,et al. a(1) (1420) resonance as a tetraquark state and its isospin partner[J]. PHYSICAL REVIEW D,2015,91:13. |
| APA | Chen, Hua-Xing,Cui, Er-Liang,Chen, Wei,Steele, T. G.,Liu, Xiang,&Zhu, Shi-Lin.(2015).a(1) (1420) resonance as a tetraquark state and its isospin partner.PHYSICAL REVIEW D,91,13. |
| MLA | Chen, Hua-Xing,et al."a(1) (1420) resonance as a tetraquark state and its isospin partner".PHYSICAL REVIEW D 91(2015):13. |
入库方式： OAI收割
来源：近代物理研究所
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