Abstract
We study the decay process to and the meson-baryon final state for the analysis of resonances. Considering the Cabibbo-Kobayashi-Maskawa matrix, color suppression, diquark correlation, and the kinematical condition, we show that the final meson-baryon state should be in a pure combination, when the meson-baryon invariant mass is small. Because the contamination usually makes it difficult to analyze resonances directly from experiments, the decay is an ideal process to study resonances. Calculating the final-state interaction by chiral unitary approaches, we find that the invariant mass distributions have the same peak structure in the all charge combination of the states related to the higher pole of the two poles of the . Furthermore, we obtain a clear peak structure in the and spectra.
1 More- Received 26 August 2015
DOI:https://doi.org/10.1103/PhysRevC.92.055204
©2015 American Physical Society