Summary
We have studied three final states involving a hyperon and two pions produced by 1.33 GeV/c negative kaons in the Lawrence Radiation Laboratory 72-inch hydrogen bubble chamber. We found the Y *1 (1385) dominated the Λπ+π- final state while the Y *0 (1405) and the Y *0 (1520) were prominent in the Σ±π0π∓ final states. The partial cross-sections, masses, widths and production angular distributions of the resonances were obtained. Resonance production was determined to proceed mainly through thes-channel.
Riassunto
Si sono studiati tre stati finali coinvolgenti un iperone e due pioni prodotti da kaoni negativi di 1.33 GeV/c nella camera a bolle ad idrogeno da 72 pollici del Lawrence Radiation Laboratory. Si è trovato che Y *1 (1385) Λπ+π- mentre Y *0 (1405) e Y *0 (1520) sono importanti negli stati finali Λπ+π-. Si sono ottenute le sezioni d'urto parziali, le masse, le ampiezze e le distribuzioni angolari di produzione delle risonanze. Si è determinato che la produzione di risonanza avviene in generale tramite il canales.
Реюме
Мы исследовали три конечных состояния, включающих гиперон и два пиона, рожденных отрицательными каонами с импульсом 1.33 ГэВ/с в 72-дюймивой водородной пузырбковой камере в Лоуренсской Радиационной Лаборатории. Мы находим, что Y *1 (1385) преобладает в конечном состоянии Λπ+λ-, в то время как Y *0 (1405) и Y *0 (1520) доминируют в конечных состояниях Σ±π0π-∓. Были получены парциальные поперечные сечения, массы, ширины и угловые распределения рождения резонансов. Было отмечено, что рождение резонансов, в основном, происходит черезs-канал.
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This work has been supported by the AEC. Funds for the operation of the computer have been provided in part by the NSF.
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Gordon, H.A., Ficenec, J.R. & Trower, W.P. Resonance production in Yпπ final states of K−p interactions at 1.33 GeV/c. Nuovo Cimento A (1965-1970) 61, 353–368 (1969). https://doi.org/10.1007/BF02756847
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DOI: https://doi.org/10.1007/BF02756847