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Title: Baryonic Resonances from the Interactions of the Baryon Decuplet and Meson Octet

Abstract

We study S-wave interactions of the baryon decuplet with the octet of pseudoscalar mesons using the lowest order chiral Lagrangian. We find two bound states in the SU(3) limit corresponding to the octet and decuplet representations. These are found to split into eight different trajectories in the complex plane when the SU(3) symmetry is broken gradually. Finally, we are able to provide a reasonable description for a good number of 4-star (3/2){sup -} resonances listed by the Particle Data Group. In particular, the {xi}(1820), the {lambda}(1520) and the {sigma}(1670) states are well reproduced. We predict a few other resonances and also evaluate the couplings of the observed resonances to the various channels from the residues at the poles of the scattering matrix from where partial decay widths into different channels can be evaluated.

Authors:
; ;  [1];  [2]
  1. Departamento de Fisica Teorica, Institutos de Investigacion de Paterna -- Universidad de Valencia-CSIC, Apdo. correos 22085, 46071, Valencia (Spain)
  2. (Spain)
Publication Date:
OSTI Identifier:
20798073
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 814; Journal Issue: 1; Conference: 11. international conference on hadron spectroscopy, Rio de Janeiro (Brazil), 21-26 Aug 2005; Other Information: DOI: 10.1063/1.2176487; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOUND STATE; CHIRAL SYMMETRY; CHIRALITY; LAGRANGIAN FUNCTION; LAMBDA-1520 BARYONS; MESON OCTETS; MESON-BARYON INTERACTIONS; PARTICLE DECAY; PARTICLE WIDTHS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; S WAVES; SCATTERING; SIGMA-1670 BARYONS; SU-3 GROUPS; XI-1820 BARYONS

Citation Formats

Oset, E., Sarkar, S., Vacas, M. J. Vicente, and IFIC, Centro Mixto, Institutos de Investigacion de Paterna - Universidad de Valencia-CSIC, Apdo. correos 22085, 46071, Valencia. Baryonic Resonances from the Interactions of the Baryon Decuplet and Meson Octet. United States: N. p., 2006. Web. doi:10.1063/1.2176487.
Oset, E., Sarkar, S., Vacas, M. J. Vicente, & IFIC, Centro Mixto, Institutos de Investigacion de Paterna - Universidad de Valencia-CSIC, Apdo. correos 22085, 46071, Valencia. Baryonic Resonances from the Interactions of the Baryon Decuplet and Meson Octet. United States. doi:10.1063/1.2176487.
Oset, E., Sarkar, S., Vacas, M. J. Vicente, and IFIC, Centro Mixto, Institutos de Investigacion de Paterna - Universidad de Valencia-CSIC, Apdo. correos 22085, 46071, Valencia. Sat . "Baryonic Resonances from the Interactions of the Baryon Decuplet and Meson Octet". United States. doi:10.1063/1.2176487.
@article{osti_20798073,
title = {Baryonic Resonances from the Interactions of the Baryon Decuplet and Meson Octet},
author = {Oset, E. and Sarkar, S. and Vacas, M. J. Vicente and IFIC, Centro Mixto, Institutos de Investigacion de Paterna - Universidad de Valencia-CSIC, Apdo. correos 22085, 46071, Valencia},
abstractNote = {We study S-wave interactions of the baryon decuplet with the octet of pseudoscalar mesons using the lowest order chiral Lagrangian. We find two bound states in the SU(3) limit corresponding to the octet and decuplet representations. These are found to split into eight different trajectories in the complex plane when the SU(3) symmetry is broken gradually. Finally, we are able to provide a reasonable description for a good number of 4-star (3/2){sup -} resonances listed by the Particle Data Group. In particular, the {xi}(1820), the {lambda}(1520) and the {sigma}(1670) states are well reproduced. We predict a few other resonances and also evaluate the couplings of the observed resonances to the various channels from the residues at the poles of the scattering matrix from where partial decay widths into different channels can be evaluated.},
doi = {10.1063/1.2176487},
journal = {AIP Conference Proceedings},
number = 1,
volume = 814,
place = {United States},
year = {Sat Feb 11 00:00:00 EST 2006},
month = {Sat Feb 11 00:00:00 EST 2006}
}