Vector mesons and electromagnetic form factor of the Lambda hyperon

doi:10.1103/PhysRevD.98.094006

ITP OpenIR > SCI期刊论文

	Cao, X 1; Dai, JP ; Xie, YP
	Vector mesons and electromagnetic form factor of the Lambda hyperon
Source Publication	PHYSICAL REVIEW D
Language	英语
Keyword	TIME-LIKE REGION STATE CHROMODYNAMICS P(P)OVER-BAR PSI(3770) E(+)E(-) VICINITY Y(2175) HYBRID
Abstract	The measured electromagnetic form factors of A hyperon in the timelike region are significantly deviated from pQCD prediction. We attribute the nonvanishing cross section near threshold to be the contribution of below-threshold phi(2170) state, supporting its exotic structure. Above the threshold, we find significant role of a wide vector meson with the mass of around 2.34 GeV, which would be the same state present in pp annihilation reactions. As a result, we give a satisfactory description of the behavior of existing data without modifying pQCD expectation.
	2018
ISSN	2470-0010
Volume	98 Issue:9 Pages:94006
Subject Area	Astronomy & Astrophysics ; Physics
MOST Discipline Catalogue	Astronomy & Astrophysics ; Physics, Particles & Fields
DOI	10.1103/PhysRevD.98.094006
Indexed By	SCIE
Citation statistics	Cited Times:4[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.itp.ac.cn/handle/311006/22787
Collection	SCI期刊论文
Affiliation	1.Chinese Acad Sci, CAS Key Lab High Precis Nucl Spect, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Ctr Nucl Matter Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, MOE Key Lab Particle Phys Astrophys & Cosmol, INPAC, Shanghai 200240, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation GB/T 7714	Cao, X,Dai, JP,Xie, YP. Vector mesons and electromagnetic form factor of the Lambda hyperon[J]. PHYSICAL REVIEW D,2018,98(9):94006.
APA	Cao, X,Dai, JP,&Xie, YP.(2018).Vector mesons and electromagnetic form factor of the Lambda hyperon.PHYSICAL REVIEW D,98(9),94006.
MLA	Cao, X,et al."Vector mesons and electromagnetic form factor of the Lambda hyperon".PHYSICAL REVIEW D 98.9(2018):94006.

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