Reaction k-p → π0π0 Λ from pK-=514 to 750 MeV/c

S. Prakhov, B. M K Nefkens, C. E. Allgower, V. Bekrenev, W. J. Briscoe, M. Clajus, J. R. Comfort, K. Craig, D. Grosnick, D. Isenhower, N. Knecht, D. Koetke, A. Koulbardis, N. Kozlenko, S. Kruglov, G. Lolos, I. Lopatin, D. M. Manley, R. Manweiler, A. MarušićS. McDonald, J. Olmsted, Z. Papandreou, D. 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. Supek, W. B. Tippens

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Abstract

Reaction K-p → π0π0 Λ was measured at eight incident K- momenta between 514 and 750 MeV/c using the Crystal Ball multiphoton spectrometer. The reaction dynamics are displayed in total cross sections, Dalitz plots, invariant-mass spectra, production angular distributions, and the Λ polarization. The π0π0 Λ production is dominated by the π0Σ0(1385) intermediate state; no trace of other light Σ* states is observed, and the role of the f0(600) meson appears to be insignificant. A striking similarity is seen between K -p → π0π0 Λ and π-p → π0π0n; this can be understood as a consequence of dynamical flavor symmetry.

Original languageEnglish (US)
Article number042202
Pages (from-to)042202-1-042202-4
JournalPhysical Review C - Nuclear Physics
Volume69
Issue number4
DOIs
StatePublished - Apr 2004

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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