Skip to main content

Meson-baryon s-wave resonances with strangeness -3

Abstract.

Starting from a consistent SU(6) extension of the Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian ( Phys. Rev. D 74, 034025 (2006)), we study the s-wave meson-baryon resonances in the strangeness S = - 3 and negative-parity sectors. Those resonances are generated by solving the Bethe-Salpeter equation with the WT interaction used as kernel. The considered mesons are those of the 35-SU(6)-plet, which includes the pseudoscalar (PS) octet of pions and the vector (V) nonet of the rho-meson. For baryons we consider the 56-SU(6)-plet, made of the 1/2+ octet of the nucleon and the 3/2+ decuplet of the Delta. Quantum numbers I(J P) = 0(3/2-) are suggested for the experimental resonances Ω *(2250)- and Ω *(2380)-. Among other, resonances with I = 1 are found, which minimal quark content is sss¯l', being s the strange quark and l, l' any of the the light up or down quarks. A clear signal for such a pentaquark would be a baryonic resonance with strangeness -3 and electric charge -2 or 0, in proton charge units. We suggest looking for K - Ξ - resonances with masses around 2100 and 2240MeV in the sector 1(1/2-), and for π ± Ω - and K - Ξ *- resonances with masses around 2260MeV in the sector 1(3/2-).

This is a preview of subscription content, access via your institution.

References

  1. C. Garcia-Recio, J. Nieves, L.L. Salcedo, Phys. Rev. D 74, 034025 (2006).

    Article  ADS  Google Scholar 

  2. C. Garcia-Recio, J. Nieves, L.L. Salcedo, Phys. Rev. D 74, 036004 (2006)

    Article  ADS  Google Scholar 

  3. N. Kaiser, P.B. Siegel, W. Weise, Nucl. Phys. A 594, 325 (1995)

    Article  ADS  Google Scholar 

  4. J. Nieves, E. Ruiz Arriola, Phys. Rev. D 64, 116008 (2001)

    Article  ADS  Google Scholar 

  5. E.E. Kolomeitsev, M.F.M. Lutz, Phys. Lett. B 585, 243 (2004)

    Article  ADS  Google Scholar 

  6. S.F. Biagi, Z. Phys. C 31, 33 (1986).

    Article  Google Scholar 

  7. Particle Data Group (W.-M. Yao), J. Phys. G 33, 1 (2006).

    Article  ADS  Google Scholar 

  8. C. Garcia-Recio, J. Nieves, L.L. Salcedo, arXiv:hep-ph/0610127, these proceedings.

  9. D. Aston, Phys. Lett. B 194, 579 (1987).

    Article  ADS  Google Scholar 

  10. D. Aston, Phys. Lett. B 215, 799 (1988).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Garcıa-Recio, C., Nieves, J. & Salcedo, L.L. Meson-baryon s-wave resonances with strangeness -3. Eur. Phys. J. A 31, 540–542 (2007). https://doi.org/10.1140/epja/i2006-10241-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1140/epja/i2006-10241-3

PACS.

  • 11.30.Hv Flavor symmetries
  • 11.30.Ly Other internal and higher symmetries
  • 11.10.St Bound and unstable states; Bethe-Salpeter equations
  • 11.30.Rd Chiral symmetries