Nucleon Form Factors and N-A Transitions in a Hypercentral Constituent Quark Model with Meson Cloud

被引：1
|
作者：
CHEN Dina-Yong~(1
机构：
来源：
CommunicationsinTheoreticalPhysics | 2007年 / 47卷 / 03期
基金：
中国国家自然科学基金;
关键词：
electromagnetic form factor; nucleon and △(1232); hypercentral constituent quark model; meson cloud;
D O I：
暂无
中图分类号：
O572.33 [介子];
学科分类号：
摘要：
We study the nucleon form factors and the nucleon-△(1232)transitions in a framework of hypercentralconstituent quark model.The pion meson cloud effect is taken into account explicitly.Our results show that the pioncloud contributes substantially to the nucleon form factors as well as to the helicity amplitudes of △(1232),and it givesan improved agreement compared to the experimental measurement.
引用
收藏
页码：539 / 546
页数：8
相关论文
共 50 条
  • [21] Nucleon electroweak form factors in a meson-cloud model
    Pasquini, B.
    Boffi, S.
    PROCEEDINGS OF THE 11TH WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS, 2008, : 240 - +
  • [22] An overview of the hypercentral Constituent Quark Model
    Giannini, MM
    Santopinto, E
    Vassallo, A
    PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 50, NO 2: QUARKS IN HADRONS AND NUCLEI, 2003, 50 (02): : 263 - 272
  • [23] Nucleon-meson coupling constants and form factors in the quark model
    Downum, C.
    Barnes, T.
    Stone, J. R.
    Swanson, E. S.
    PHYSICS LETTERS B, 2006, 638 (5-6) : 455 - 460
  • [24] Gravitational form factors of ρ meson with a light-cone constituent quark model
    Sun, Bao-Dong
    Dong, Yu-Bing
    PHYSICAL REVIEW D, 2020, 101 (09)
  • [25] High Q2 behavior of the electromagnetic form factors in the relativistic hypercentral constituent quark model
    Santopinto, E.
    Vassallo, A.
    Giannini, M. M.
    De Sanctis, M.
    PHYSICAL REVIEW C, 2010, 82 (06):
  • [26] Covariant electroweak nucleon form factors in a chiral constituent-quark model
    S. Boffi
    L.Ya. Glozman
    W. Klink
    W. Plessas
    M. Radici
    R.F. Wagenbrunn
    The European Physical Journal A - Hadrons and Nuclei, 2002, 14 : 17 - 21
  • [27] Covariant electroweak nucleon form factors in a chiral constituent-quark model
    Boffi, S
    Glozman, LY
    Klink, W
    Plessas, W
    Radici, M
    Wagenbrunn, RF
    EUROPEAN PHYSICAL JOURNAL A, 2002, 14 (01): : 17 - 21
  • [28] Helicity amplitudes in the hypercentral constituent quark model
    Giannini, MM
    Santopinto, E
    Vassallo, A
    GDH 2002: PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON THE GERASIMOV-DRELL-HEARN SUM RULE AND THE SPIN STRUCTURE OF THE NUCLEON, 2003, : 281 - 286
  • [29] Hypercentral constituent quark model and isospin dependence
    M.M. Giannini
    E. Santopinto
    A. Vassallo
    The European Physical Journal A - Hadrons and Nuclei, 2001, 12 : 447 - 452
  • [30] Hypercentral constituent quark model and isospin dependence
    Giannini, MM
    Santopinto, E
    Vassallo, A
    EUROPEAN PHYSICAL JOURNAL A, 2001, 12 (04): : 447 - 452
12345