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

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Prakhov, S., Nefkens, B. M. K., Allgower, C. E., Bekrenev, V., Briscoe, W. J., Clajus, M., Comfort, J. R., Craig, K., Grosnick, D., Isenhower, D., Knecht, N., Koetke, D., Koulbardis, A., Kozlenko, N., Kruglov, S., Lolos, G., Lopatin, I., Manley, D. M., Manweiler, R., ... Tippens, W. B. (2004). Reaction k-p → π0π0 Λ from pK-=514 to 750 MeV/c. Physical Review C - Nuclear Physics, 69(4), 042202-1-042202-4. [042202]. https://doi.org/10.1103/PhysRevC.69.042202