QCD sum rule study of hidden-charm pentaquarks

doi:10.1140/epjc/s10052-016-4438-5

	QCD sum rule study of hidden-charm pentaquarks
	Chen, Hua-Xing 1,2; Cui, Er-Liang 1,2; Chen, Wei 3; Liu, Xiang 4,5,6; Steele, T. G.3; Zhu, Shi-Lin 7,8,9,10
刊名	EUROPEAN PHYSICAL JOURNAL C
	2016-10-24
卷号	76 页码:19
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-016-4438-5
英文摘要	We study the mass spectra of hidden-charm pentaquarks having spin J = 1/2/3/2/5/2 and quark contents uudc (c) over bar. We systematically construct all the relevant local hidden-charm pentaquark currents, and we select some of them to perform QCD sum rule analyses. We find that the P-c(4380) and P-c(4450) can be identified as hidden-charm pentaquark states composed of an anti-charmed meson and a charmed baryon. Besides them, we also find (a) the lowest-lying hidden-charm pentaquark state of J(P) = 1/2(-) has the mass 4.33(-0.13)(+0.17) GeV, while the one of J(P) = 1/2(+) is significantly higher, that is, around 4.7-4.9GeV; (b) the lowest-lying hidden-charm pentaquark state of J(P) = 3/2(-) has the mass 4.37(-0.13)(+0.18) GeV, consistent with the P-c(4380) of J(P) = 3/2(-), while the one of J(P) = 3/2(+) is also significantly higher, that is, above 4.6GeV; (c) the hidden-charm pentaquark state of J(P) = 5/2(-) has a mass around 4.5-4.6GeV, slightly larger than the P-c(4450) of J(P) = 5/2(+).
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] ; Ministry of Education of China (Fundamental Research Funds for the Central Universities) ; Natural Sciences and Engineering Research Council of Canada (NSERC)
WOS关键词	CHIRAL SYMMETRY-BREAKING ; QUARK CONDENSATE ; GLUON CONDENSATE ; BARYON ; RESONANCE ; MASSES ; DECAYS ; SYSTEM ; STATES
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000388984400001
资助机构	National Natural Science Foundation of China ; Ministry of Education of China (SRFDP) ; Ministry of Education of China (Fundamental Research Funds for the Central Universities) ; Natural Sciences and Engineering Research Council of Canada (NSERC)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/43862]
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, Beijing 100191, Peoples R China 2.Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, 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, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China 6.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 7.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 8.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 9.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 10.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hua-Xing,Cui, Er-Liang,Chen, Wei,et al. QCD sum rule study of hidden-charm pentaquarks[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76:19.
APA	Chen, Hua-Xing,Cui, Er-Liang,Chen, Wei,Liu, Xiang,Steele, T. G.,&Zhu, Shi-Lin.(2016).QCD sum rule study of hidden-charm pentaquarks.EUROPEAN PHYSICAL JOURNAL C,76,19.
MLA	Chen, Hua-Xing,et al."QCD sum rule study of hidden-charm pentaquarks".EUROPEAN PHYSICAL JOURNAL C 76(2016):19.