Measurement of $π^0 Λ$, $\bar{K}^0 n$, and $π^0 Σ^0$ production in $K^- p$ interactions for $p_{K^-}$ between 514 and 750 MeV/$c$

S. Prakhov, B. M. K. Nefkens, V. Bekrenev, W. J. Briscoe, N. Knecht, A. Koulbardis, N. Kozlenko, S. Kruglov, G. Lolos, I. Lopatin, A. Marušić, S. McDonald, D. Peaslee, N. Phaisangittisakul, J. W. Price, A. Shafi, A. Starostin, H. M. Staudenmaier, I. I. Strakovsky, I. Supek

Published 2008-12-10, updated 2009-06-26Version 3

Differential cross sections and hyperon polarizations have been measured for $\bar{K}^0 n$, $\pi^0 \Lambda$, and $\pi^0 \Sigma^0$ production in $K^- p$ interactions at eight $K^-$ momenta between 514 and 750 MeV/$c$. The experiment detected the multiphoton final states with the Crystal Ball spectrometer using a $K^-$ beam from the Alternating Gradient Synchrotron of BNL. The results provide significantly greater precision than the existing data, allowing a detailed reexamination of the excited hyperon states in our energy range.