Advertisement

Analysis of the quadrupole deformation of Δ(1232) within an effective Lagrangian model for pion photoproduction from the nucleon

  • C. Fernández-Ramırez
  • E. Moya de Guerra
  • J. M. Udıas
QNP 2006

Abstract.

We present an extraction of the E2/M1 ratio of the Δ(1232) from experimental data applying an effective Lagrangian model. We compare the result obtained with different nucleonic models and we reconcile the experimental results with the lattice QCD calculations.

PACS.

14.20.Gk Baryon resonances with S = 0 25.20.Lj Photoproduction reactions 13.60.Le Meson production 

References

  1. 1.
    B. Krusche, S. Schadmand, Prog. Part. Nucl. Phys. 51, 399 (2003).CrossRefADSGoogle Scholar
  2. 2.
    A.M. Bernstein, Eur. Phys. J. A 17, 349 (2003).CrossRefADSGoogle Scholar
  3. 3.
    C. Fernández-Ramírez, Electromagnetic production of light mesons, PhD dissertation, Universidad Complutense de Madrid (2006).Google Scholar
  4. 4.
    C. Fernández-Ramírez, E. Moya de Guerra, J.M. Udías, Ann. Phys. (N.Y.) 321, 1408 (2006).zbMATHCrossRefADSGoogle Scholar
  5. 5.
    H. Garcilazo, E. Moya de Guerra, Nucl. Phys. A 562, 521 (1993).CrossRefADSGoogle Scholar
  6. 6.
    T. Sato, T.-S.H. Lee, Phys. Rev. C 63, 055201 (2001).CrossRefADSGoogle Scholar
  7. 7.
    R.M. Davidson, N.C. Mukhopadhyay, R.S. Wittman, Phys. Rev. D 43, 71 (1991).CrossRefADSGoogle Scholar
  8. 8.
    V. Pascalutsa, J.A. Tjon, Phys. Rev. C 70, 035209 (2004).CrossRefADSGoogle Scholar
  9. 9.
    M. Vanderhaeghen, K. Heyde, J. Ryckebusch, M. Waroquier, Nucl. Phys. A 595, 219 (1995).CrossRefADSGoogle Scholar
  10. 10.
    R.D. Peccei, Phys. Rev. 181, 1902 (1969).CrossRefADSGoogle Scholar
  11. 11.
    W.-M. Yao, J. Phys. G 33, 1 (2006), http://pdg.lbl.gov.CrossRefADSGoogle Scholar
  12. 12.
    R.A. Arndt, W.J. Briscoe, I.I. Strakovsky, R.L. Workman, Phys. Rev. C 66, 055213 (2002)CrossRefADSGoogle Scholar
  13. 13.
    T.P. Vrana, S.A. Dytman, T.-S.H. Lee, Phys. Rep. 328, 181 (2000).CrossRefADSGoogle Scholar
  14. 14.
    Numerical Algorithms Group Ltd., Wilkinson House, Jordan Hill Road, Oxford OX2-8DR, UK, http://www.nag.co.uk/.Google Scholar
  15. 15.
    D.G. Ireland, S. Janssen, J. Ryckebusch, Nucl. Phys. A 740, 147 (2004).CrossRefADSGoogle Scholar
  16. 16.
    C. Fernández-Ramírez, E. Moya de Guerra, J.M. Udías, Phys. Rev. C 73, 042201(R) (2006).CrossRefADSGoogle Scholar
  17. 17.
    G. Blanpied, Phys. Rev. C 64, 025203 (2001).CrossRefADSGoogle Scholar
  18. 18.
    S. Stave, Eur. Phys. J. A 30, 471 (2006).CrossRefADSGoogle Scholar
  19. 19.
    J. Ahrens, Eur. Phys. J. A 21, 323 (2004).CrossRefGoogle Scholar
  20. 20.
    M.G. Fuda, H. Alharbi, Phys. Rev. C 68, 064002 (2003).CrossRefADSGoogle Scholar
  21. 21.
    C.M. Becchi, G. Morpurgo, Phys. Lett. 17, 352 (1965).CrossRefADSGoogle Scholar
  22. 22.
    A.J. Buchmann, E. Hernández, A. Faessler, Phys. Rev. C 55, 448 (1997).CrossRefADSGoogle Scholar
  23. 23.
    A. Wirzba, W. Weise, Phys. Lett. B 188, 6 (1987).CrossRefADSMathSciNetGoogle Scholar
  24. 24.
    D.B. Leinweber, T. Draper, R.M. Woloshyn, Phys. Rev. D 48, 2230 (1993).CrossRefADSGoogle Scholar
  25. 25.
    C. Alexandrou, Ph. de Forcrand, H. Neff, J.W. Negele, W. Schroers, A. Tsapalis, Phys. Rev. Lett. 94, 021601 (2005).CrossRefADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • C. Fernández-Ramırez
    • 1
    • 2
  • E. Moya de Guerra
    • 1
    • 3
  • J. M. Udıas
    • 3
  1. 1.Instituto de Estructura de la MateriaCSICMadridSpain
  2. 2.Departamento de Fısica Atómica, Molecular y NuclearUniversidad de SevillaSevillaSpain
  3. 3.Departamento de Fısica Atómica, Molecular y Nuclear, Facultad de Ciencias FısicasUniversidad Complutense de MadridMadridSpain

Personalised recommendations