Proceedings of the Japan Academy, Series B
Online ISSN : 1349-2896
Print ISSN : 0386-2208
ISSN-L : 0386-2208
Original Articles
Analysis of Λ(1405) production data in the πpK0πΣ reaction at pπ = 1.69 GeV/c
Maryam HASSANVAND Yoshinori AKAISHIToshimitsu YAMAZAKI
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2019 Volume 95 Issue 2 Pages 67-74

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Abstract

We have been studying the (Σπ)0 mass distribution based on data from an old Hydrogen Bubble Chamber collected by Thomas et al. concerning the p, K0)Σπ reaction at pπ = 1.69 GeV/c. In this analysis we investigated the formation of the Λ(1405) state, using the Generalized Optical Theorem and T-matrix operator. We applied a combined transition operator, Tmix, which contains T21 (=TπΣ-KN) and T22 (= TπΣ−πΣ) due to the initial channel mixing in the Λ(1405) formation. We also considered a possible mixture of I = 0 and 1 in the wave function, as well as some background of the Σ(1385) population.

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© 2019 The Japan Academy
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