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题名: pi and rho mesons, and their diquark partners, from a contact interaction
作者: Roberts, HLL ;  Bashir, A ;  Gutierrez-Guerrero, LX ;  Roberts, CD ;  Wilson, DJ
刊名: PHYSICAL REVIEW C
出版日期: 2011
卷号: 83, 期号:6, 页码:65206
关键词: ELECTROMAGNETIC FORM-FACTORS ;  DYSON-SCHWINGER EQUATIONS ;  CHIRAL-SYMMETRY BREAKING ;  ANOMALOUS GAMMA ;  BOUND-STATES ;  QCD ;  MODEL ;  LIGHT ;  NUCLEON ;  MASSES
学科分类: Physics
通讯作者: Roberts, HLL (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
部门归属: [Roberts, H. L. L.; Roberts, C. D.; Wilson, D. J.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA; [Roberts, H. L. L.; Roberts, C. D.] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany; [Roberts, H. L. L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; [Bashir, A.; Gutierrez-Guerrero, L. X.] Univ Michoacana, Inst Fis & Matemat, Morelia 58040, Michoacan, Mexico; [Bashir, A.; Roberts, C. D.] Kavli Inst Theoret Phys China, CAS, Beijing 100190, Peoples R China; [Roberts, C. D.] Peking Univ, Ctr High Energy Phys, Dept Phys, Beijing 100871, Peoples R China; [Roberts, C. D.] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
英文摘要: We present a unified Dyson-Schwinger equation treatment of static and electromagnetic properties of pseudoscalar and vector mesons, and scalar and axial-vector diquark correlations, based upon a vector-vector contact interaction. A basic motivation for this paper is the need to document a comparison between the electromagnetic form factors of mesons and those diquarks that play a material role in nucleon structure. A notable result, therefore, is the large degree of similarity between related meson and diquark form factors. The simplicity of the interaction enables computation of the form factors at arbitrarily large spacelike Q(2), which enables us to expose a zero in the rho-meson electric form factor at z(Q)(rho) approximate to root 6m(rho). Notably, r(rho)z(Q)(rho) approximate to r(D)z(Q)(D), where r(rho) and r(D) are, respectively, the electric radii of the rho-meson and deuteron.
资助者: US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]; Forschungszentrum Julich GmbH; Department of Energy
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000291935600002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14330
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Roberts, HLL,Bashir, A,Gutierrez-Guerrero, LX,et al. pi and rho mesons, and their diquark partners, from a contact interaction[J]. PHYSICAL REVIEW C,2011,83(6):65206.
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