English

Does the Sigma(1580)3/2- resonance exist?

Nuclear Experiment 2008-11-26 v3
Authors: Crystal Ball Collaboration , J. Olmsted , S. Prakhov , D. M. Manley , C. E. Allgower , V. S. Bekrenev , W. J. Briscoe , M. Clajus , J. R. Comfort , K. Craig , D. Grosnick , D. Isenhower , N. Knecht , D. D. Koetke , N. G. Kozlenko , S. Kruglov , A. A. Kulbardis , G. Lolos , I. V. Lopatin , R. Manweiler , A. Marusic , S. McDonald , B. M. K. Nefkens , Z. Papandreou , D. C. Peaslee , N. Phaisangittisakul , J. W. Price , A. F. Ramirez , M. Sadler , A. Shafi , H. Spinka , T. D. S. Stanislaus , A. Starostin , H. M. Staudenmaier , I. I. Strakovsky , I. Supek , W. B. Tippens
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Abstract

Precise new data for the reaction K−p→π0ΛK^- p \to \pi^0 \Lambda are presented in the c.m. energy range 1565 to 1600 MeV. Our analysis of these data sheds new light on claims for the Σ(1580)3/2−\Sigma(1580){3/2}^- resonance, which (if it exists with the specified quantum numbers) must be an exotic baryon because of its very low mass. Our results show no evidence for this state.

Keywords

lambda(1405) resonance photoproduction

Cite

@article{arxiv.nucl-ex/0308005,
  title  = {Does the Sigma(1580)3/2- resonance exist?},
  author = {Crystal Ball Collaboration and J. Olmsted and S. Prakhov and D. M. Manley and C. E. Allgower and V. S. Bekrenev and W. J. Briscoe and M. Clajus and J. R. Comfort and K. Craig and D. Grosnick and D. Isenhower and N. Knecht and D. D. Koetke and N. G. Kozlenko and S. Kruglov and A. A. Kulbardis and G. Lolos and I. V. Lopatin and R. Manweiler and A. Marusic and S. McDonald and B. M. K. Nefkens and Z. Papandreou and D. C. Peaslee and N. Phaisangittisakul and J. W. Price and A. F. Ramirez and M. Sadler and A. Shafi and H. Spinka and T. D. S. Stanislaus and A. Starostin and H. M. Staudenmaier and I. I. Strakovsky and I. Supek and W. B. Tippens},
  journal= {arXiv preprint arXiv:nucl-ex/0308005},
  year   = {2008}
}

Comments

4 pages, 4 figures

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