期刊
PHYSICAL REVIEW C
卷 92, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.92.055204
关键词
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资金
- JSPS KAKENHI [24740152]
- Yukawa International Program for Quark-Hadron Sciences (YIPQS)
- European FEDER funds [FIS2011-28853-C02-01, FIS2011-28853-C02-02]
- Generalitat Valenciana in the program Prometeo II [2014/068]
- European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter under the Seventh Framework Programme of the EU [283286]
- Spanish Ministerio de Economia y Competitividad
- JSPS Bilateral Joint Research Projects
- Grants-in-Aid for Scientific Research [24740152] Funding Source: KAKEN
We study the Lambda(c) decay process to pi(+) and the meson-baryon final state for the analysis of Lambda resonances. Considering the Cabibbo-Kobayashi-Maskawamatrix, color suppression, diquark correlation, and the kinematical condition, we show that the final meson-baryon state should be in a pure I = 0 combination, when the meson-baryon invariantmass is small. Because the I = 1 contamination usually makes it difficult to analyze Lambda resonances directly from experiments, the Lambda(c) decay is an ideal process to study Lambda resonances. Calculating the final-state interaction by chiral unitary approaches, we find that the pi Sigma invariant mass distributions have the same peak structure in the all charge combination of the pi Sigma states related to the higher pole of the two poles of the Lambda(1405). Furthermore, we obtain a clear Lambda(1670) peak structure in the (K) over bar N and eta Lambda spectra.
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