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Hyperfine Interactions

, Volume 213, Issue 1–3, pp 41–50 | Cite as

Double Λ-hypernuclei at the PANDA experiment

  • Alicia Sanchez Lorente
  • on behalf of the P̅ANDA Collaboration
Article

Abstract

Hypernuclear research will be one of the main topics addressed by the PANDA experiment at the planned Facility for Antiproton and Ion Research FAIR at Darmstadt (Germany). Thanks to the use of stored \(\overline{p}\) beams, copious production of double Λ hypernuclei is expected at the PANDA experiment, which will enable high precision γ spectroscopy of such nuclei for the first time. At PANDA excited states of Ξ− hypernuclei will be used as a starting point for the formation of double Λ hypernuclei. In order to predict the yield of particle stable double hypernuclei a microcanonical decay model was developed. For the detection of these nuclei, a devoted hypernuclear detector setup is planned. This set-up consists, in addition to the general purpose of the PANDA set-up, of a primary nuclear target for the production of \(\Xi^{-}+\overline{\Xi}\) pairs, a secondary active target for the hypernuclei formation and the identification of associated decay products and a germanium array detector to perform γ spectroscopy. Furthermore, the presence of \(\overline{\Xi}\) can be used as an alternative to tag the strangeness in the \(\Xi^{-}+\overline{\Xi}\). All systems need to operate in the presence of a high magnetic field and a large hadronic background. In the present talk details concerning simulations, the identification procedure of double hypernuclei and the suppression of background will be presented. In addition, the present status of the detector developments for this programme will be briefly given.

Keywords

Hypernuclei Antiprotons Gamma spectroscopy 

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References

  1. 1.
    Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons. arXiv:0903.3905v1
  2. 2.
    Kerman, A.K., Weiss, M.S.: Phys. Rev. C 8, 408 (1973)ADSCrossRefGoogle Scholar
  3. 3.
    Botvina, A.S., Pochodzalla, J.: Phys. Rev. C 76, 024909 (2007)ADSCrossRefGoogle Scholar
  4. 4.
    Yamamoto, Y., Sano, M., Wakai, M.: Prog. Theor. Phys. Suppl. 117, 265 (1994)ADSCrossRefGoogle Scholar
  5. 5.
    Hirata, Y., et al.: Nucl. Phys. A 639, 389c (1998)Google Scholar
  6. 6.
    Yamamoto, Y., Wakai, M., Motoba, T., Fukuda, T.: Nucl. Phys. A 625, 107 (1997)ADSCrossRefGoogle Scholar
  7. 7.
    Hirata, Y., et al.: Prog. Theor. Phys. 102, 89 (1999)ADSCrossRefGoogle Scholar
  8. 8.
    Aoki, S., et al., KEK E176 Collaboration: Nucl. Phys. A 828, 191 (2009)MathSciNetADSCrossRefGoogle Scholar
  9. 9.
    Yamada, T., Ikeda, K.: Phys. Rev. C 56, 3216 (1997)ADSCrossRefGoogle Scholar
  10. 10.
    Ohnishi, A., Hirata, Y., Nara, Y., Shinmura, S., Akaishi, Y.: Nucl. Phys. A 684, 595 (2001)ADSCrossRefGoogle Scholar
  11. 11.
    Ikeda, K., et al.: Prog. Theor. Phys. 91, 747 (1994)ADSCrossRefGoogle Scholar
  12. 12.
    Yamamoto, Y., Motoba, T., Fukuda, T., Takahashi, M., Ikeda, K.: Prog. Theor. Phys. Suppl. 117, 281 (1994)ADSCrossRefGoogle Scholar
  13. 13.
    Batty, C.J., Friedman, E., Gal, A.: Phys. Rev. C 59, 295–304 (1999)ADSCrossRefGoogle Scholar
  14. 14.
    Pochodzalla, J.: Nucl. Phys. A 754, 430c (2005)Google Scholar
  15. 15.
    Fermi, E.: Progr. Theor. Phys. 5, 570 (1950)MathSciNetADSCrossRefGoogle Scholar
  16. 16.
    Sanchez Lorente, A., Botvina, A., Pochodzalla, J.: Phys. Lett. B 697, 222 (2011)ADSCrossRefGoogle Scholar
  17. 17.
    Bondorf, J.P., et al.: Phys. Rep. 257, 133 (1995)ADSCrossRefGoogle Scholar
  18. 18.
    Hiyama, E., et al.: Phys. Rev. 66, 024007 (2002)MathSciNetADSGoogle Scholar
  19. 19.
    Yamada, T., Ikeda, K.: Phys. Rev. C56, 3216 (1997)ADSGoogle Scholar
  20. 20.
    Ferro, F., et al.: Nucl. Phys. A 789, 209 (2007)ADSCrossRefGoogle Scholar
  21. 21.
    Sanchez Lorente, A., et al.: Nucl. Instrum. Methods A 573, 410 (2007)CrossRefGoogle Scholar
  22. 22.
    Bamberger, A., et al.: Nucl. Phys. B 60, 1 (1973)ADSCrossRefGoogle Scholar
  23. 23.
    Bedjidian, M., et al.: Phys. Lett. 62, 467 (1976)Google Scholar
  24. 24.
    May, M., et al.: Phys. Rev. Lett. 51, 2085 (1983)ADSCrossRefGoogle Scholar
  25. 25.
    Akikawa, H., et al.: Phys. Rev. Lett. 88, 082501-1 (2002)ADSCrossRefGoogle Scholar
  26. 26.
    Steinen, M.: Master Thesis, under preparationGoogle Scholar
  27. 27.
    Bleser, S.: PhD. Thesis, under preparationGoogle Scholar
  28. 28.
    J. M. Heuser, et al.: HadronPhysics2, http://hadronphysics2.eu, work package 26, ULISI

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Alicia Sanchez Lorente
    • 1
  • on behalf of the P̅ANDA Collaboration
  1. 1.Helmholtz Institut MainzMainzGermany

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