The European Physical Journal A

, Volume 32, Issue 4, pp 403–407 | Cite as

Flavor content of nucleon form factors in a VMD approach

  • R. BijkerEmail author
PAVI 2006


The strange form factors of the nucleon are studied in a two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. A comparison with the available experimental world data from the SAMPLE, PVA4, HAPPEX and G0 Collaborations shows a good overall agreement. It is shown that the strangeness contribution to the electric and magnetic form factors is of the order of a few percent. In particular, the strange quark contribution to the charge radius is small 〈r 2 sE = 0.005 fm^2 and to the magnetic moment it is positive μs = 0.315 μN .


13.40.Gp Electromagnetic form factors 12.40.Vv Vector-meson dominance 14.20.Dh Protons and neutrons 13.40.Em Electric and magnetic moments 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    D.B. Kaplan, A. Manohar, 3105271988Google Scholar
  2. 2.
    D.H. Beck, R.D. McKeown, 511892001.Google Scholar
  3. 3.
    E.J. Beise, M.L. Pitt, D.T. Spayde, Prog. Part. Nucl. Phys. 54, 289 (2005).CrossRefADSGoogle Scholar
  4. 4.
    K.A. Aniol, 6352752006.Google Scholar
  5. 5.
    D.H. Beck, B.R. Holstein, 1012001.Google Scholar
  6. 6.
    R. Bijker, F. Iachello, 690682012004.Google Scholar
  7. 7.
    R.L. Jaffe, 2292751989.Google Scholar
  8. 8.
    F. Iachello, A.D. Jackson, A. Lande, 431911973. Google Scholar
  9. 9.
    M.R. Frank, B.K. Jennings, G.A. Miller, 549201996Google Scholar
  10. 10.
    R. Bijker, F. Iachello, A. Leviatan, 236691994Google Scholar
  11. 11.
    G.P. Lepage, S.J. Brodsky, 435451979Google Scholar
  12. 12.
    P. Jain, R. Johnson, U.-G. Meissner, N.W. Park, J. Schechter, 3732521988.Google Scholar
  13. 13.
    F. Iachello, D. Kusnezov, 4541561992.Google Scholar
  14. 14.
    M. Harada, J. Schechter, 5433941996.Google Scholar
  15. 15.
    C. Gobbi, F. Iachello, D. Kusnezov, 5020481994.Google Scholar
  16. 16.
    R. Bijker, arXiv:nucl-th/0511004.Google Scholar
  17. 17.
    R. Bijker, 32L492006 [arXiv:nucl-th/0511060].Google Scholar
  18. 18.
    N.W. Park, H. Weigel, 5414531992.Google Scholar
  19. 19.
    G.T. Garvey, W.C. Louis, D.H. White, 487611993.Google Scholar
  20. 20.
    H. Forkel, M. Nielsen, X. Jin, T.D. Cohen, 5031081994.Google Scholar
  21. 21.
    H.-W. Hammer, U.-G. Meissner, D. Drechsel, 3673231996.Google Scholar
  22. 22.
    V.E. Lyubovitskij, P. Wang, Th. Gutsche, A. Faessler, 660552042002.Google Scholar
  23. 23.
    U.-G. Meissner, V. Mull, J. Speth, J.W. Van Orden, 4083811997.Google Scholar
  24. 24.
    A. Silva, H.-Ch. Kim, K. Goeke, 224812004.Google Scholar
  25. 25.
    K.A. Aniol, 960220032006.Google Scholar
  26. 26.
    HAPPEX 2 Collaboration (K. Paschke, D.S. Armstrong, K. De Jager), private communication (2006).Google Scholar
  27. 27.
    D.T. Spayde, 583792004.Google Scholar
  28. 28.
    S.F. Pate, G. MacLachlan, D. McKee, V. Papavassiliou, arXiv:hep-ex/0512032.Google Scholar
  29. 29.
    S.F. Pate, 920820022004.Google Scholar
  30. 30.
    L.A. Ahrens, 357851987.Google Scholar
  31. 31.
    K.A. Aniol, 690655012004.Google Scholar
  32. 32.
    D.S. Armstrong, 950920012005.Google Scholar
  33. 33.
    F.E. Maas, 941520012005.Google Scholar
  34. 34.
    F.E. Maas, 930220022004.Google Scholar
  35. 35.
    D.B. Leinweber, S. Boinepalli, I.C. Cloet, A.W. Thomas, A.G. Willams, R.D. Young, J.M. Zanotti, J.B. Zhang, 942120012005.Google Scholar
  36. 36.
    D.B. Leinweber, S. Boinepalli, A.W. Thomas, P. Wang, A.G. Willams, R.D. Young, J.M. Zanotti, J.B. Zhang, arXiv:hep-lat/0601025.Google Scholar
  37. 37.
    B.S. Zou, D.O. Riska, 950720012005.Google Scholar
  38. 38.
    R. Bijker, M.M. Giannini, E. Santopinto, 5952602004.Google Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Instituto de Ciencias NuclearesUniversidad Nacional Autónoma de MéxicoMéxico DFMexico

Personalised recommendations