Advertisement

The European Physical Journal A

, Volume 31, Issue 4, pp 485–490 | Cite as

Photoexcitation of baryon resonances on nucleons and nuclei

An example: recent results from photoproduction of η-mesons
  • B. KruscheEmail author
  • I. Jaegle
  • T. Mertens
QNP 2006

Abstract.

Photoproduction of η-mesons off the proton, the deuteron and other light nuclei, and off heavy nuclei has been studied in detail during the last decade at the electron accelerators MAMI in Mainz, ELSA in Bonn, ERSF in Grenoble, CEBAF in Newport News, at KEK, and at Tohoku. The physics topics range from the detailed investigation of the properties of known nucleon resonances (in particular S 11(1535)), over the search of new states, to the in-medium properties of baryon resonances, and the possible formation of η-nucleus (quasi)bound states (η-mesic nuclei). It is thus an excellent example for the different aspects of the photoexcitation of nucleon resonances. Here we report new preliminary results from the CBELSA/TAPS experiment for this reaction at higher incident photon energies for the deuteron and heavy nuclei.

PACS.

13.60.Le Meson production 25.20.Lj Photoproduction reactions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W.-M. Yao, J. Phys. G 33, 1 (2006).CrossRefADSGoogle Scholar
  2. 2.
    S. Capstick, W. Roberts, Phys. Rev. D 49, 4570 (1994)CrossRefADSGoogle Scholar
  3. 3.
    V.D. Burkert, T.-S. Lee, Int. J. Mod. Phys. E 13, 1035 (2004).CrossRefADSGoogle Scholar
  4. 4.
    B. Krusche, S. Schadmand, Prog. Part. Nucl. Phys. 51, 399 (2003).CrossRefADSGoogle Scholar
  5. 5.
    M. Lutz, S. Klimt, W. Weise, Nucl. Phys. A 542, 521 (1992).CrossRefADSGoogle Scholar
  6. 6.
    M. Post, S. Leupold, U. Mosel, Nucl. Phys. A 741, 81 (2004).CrossRefADSGoogle Scholar
  7. 7.
    T.A. Armstrong, Phys. Rev. D 5, 1640 (1972).CrossRefADSMathSciNetGoogle Scholar
  8. 8.
    T.A. Armstrong, Nucl. Phys. B 41, 445 (1972).CrossRefADSGoogle Scholar
  9. 9.
    N. Bianchi, Phys. Lett. B 325, 333 (1994).CrossRefADSGoogle Scholar
  10. 10.
    J. Lehr, M. Effenberger, U. Mosel, Nucl. Phys. A 671, 503 (2000).CrossRefADSGoogle Scholar
  11. 11.
    K. Büchler, Nucl. Phys. A 570, 580 (1994).CrossRefADSGoogle Scholar
  12. 12.
    A. Braghieri, Phys. Lett. B 363, 46 (1995).CrossRefADSGoogle Scholar
  13. 13.
    B. Krusche, Phys. Rev. Lett. 74, 3736 (1995).CrossRefADSGoogle Scholar
  14. 14.
    M. MacCormick, Phys. Rev. C 53, 41 (1996).CrossRefADSGoogle Scholar
  15. 15.
    F. Härter, Phys. Lett. B 401, 229 (1997).CrossRefADSGoogle Scholar
  16. 16.
    B. Krusche, Eur. Phys. J. A 6, 309 (1999).CrossRefADSGoogle Scholar
  17. 17.
    M. Wolf, Eur. Phys. J. A 9, 5 (2000).CrossRefADSGoogle Scholar
  18. 18.
    W. Langgärtner, Phys. Rev. Lett. 87, 052001 (2001).CrossRefADSGoogle Scholar
  19. 19.
    B. Krusche, Eur. Phys. J. A 22, 347 (2004).CrossRefADSGoogle Scholar
  20. 20.
    J. Lehr, U. Mosel, Phys. Rev. C 64, 042202 (2001).CrossRefADSGoogle Scholar
  21. 21.
    B. Krusche, Prog. Part. Nucl. Phys. 55, 46 (2005).CrossRefADSGoogle Scholar
  22. 22.
    B. Krusche, Phys. Rev. Lett. 86, 4764 (2001).CrossRefADSGoogle Scholar
  23. 23.
    B. Krusche, Eur. Phys. J. A 22, 277 (2004).CrossRefADSGoogle Scholar
  24. 24.
    B. Krusche, Phys. Lett. B 397, 171 (1997).CrossRefADSGoogle Scholar
  25. 25.
    W.-T. Chiang, Nucl. Phys. A 700, 429 (2002).CrossRefADSGoogle Scholar
  26. 26.
    V. Crede, Phys. Rev. Lett. 94, 012004 (2005).CrossRefADSGoogle Scholar
  27. 27.
    F. Renard, Phys. Lett. B 528, 215 (2002).CrossRefADSGoogle Scholar
  28. 28.
    M. Dugger, Phys. Rev. Lett. 89, 222002 (2002).CrossRefADSGoogle Scholar
  29. 29.
    B. Krusche, Phys. Lett. B 358, 40 (1995).CrossRefADSGoogle Scholar
  30. 30.
    P. Hoffmann-Rothe, Phys. Rev. Lett. 78, 4697 (1997).CrossRefADSGoogle Scholar
  31. 31.
    V. Hejny, Eur. Phys. J. A 6, 83 (1999).ADSGoogle Scholar
  32. 32.
    J. Weiss, Eur. Phys. J. A 11, 371 (2001).CrossRefADSGoogle Scholar
  33. 33.
    V. Hejny, Eur. Phys. J. A 13, 493 (2002).ADSGoogle Scholar
  34. 34.
    J. Weiss, Eur. Phys. J. A 16, 275 (2003).CrossRefADSGoogle Scholar
  35. 35.
    M. Pfeiffer, Phys. Rev. Lett. 92, 252001 (2004).CrossRefADSGoogle Scholar
  36. 36.
    R.A. Arndt, Phys. Rev. C 69, 035208 (2004).CrossRefADSGoogle Scholar
  37. 37.
    E. Aker, Nucl. Instrum. Methods A 321, 69 (1992).CrossRefADSGoogle Scholar
  38. 38.
    R. Novotny, IEEE Trans. Nucl. Sci. 38, 379 (1991).CrossRefGoogle Scholar
  39. 39.
    A.R. Gabler, Nucl. Instrum. Methods A 346, 168 (1994).CrossRefADSGoogle Scholar
  40. 40.
    V. Kuznetsov for the GRAAL Collaboration, hep-ex/0409032 (2004).Google Scholar
  41. 41.
    M. Röbig-Landau, Phys. Lett. B 373, 45 (1996).CrossRefADSGoogle Scholar
  42. 42.
    T. Yorita, Phys. Lett. B 476, 226 (2000).CrossRefADSGoogle Scholar
  43. 43.
    T. Kinoshita, Phys. Lett. B 639, 429 (2006).CrossRefADSGoogle Scholar
  44. 44.
    P. Mühlich, University of Giessen, private communication (2006).Google Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of Physics and AstronomyUniversity of BaselBaselSwitzerland

Personalised recommendations