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在 p = 1.69 GeV/c 下πp → KπΣ 反应中 Λ(1405) 产生数据的分析。

Analysis of Λ(1405) production data in the πp → KπΣ reaction at p = 1.69 GeV/c.

机构信息

Department of Physics, Isfahan University of Technology.

RIKEN, Nishina Center.

出版信息

Proc Jpn Acad Ser B Phys Biol Sci. 2019;95(2):67-74. doi: 10.2183/pjab.95.006.

DOI:10.2183/pjab.95.006
PMID:30745503
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6403431/
Abstract

We have been studying the (Σπ) mass distribution based on data from an old Hydrogen Bubble Chamber collected by Thomas et al. concerning the p(π, K)Σπ reaction at p = 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, T, which contains T (=T) and T (= T) 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.

摘要

我们一直在研究基于托马斯等人收集的旧氢气泡室数据的(Σπ)质量分布,这些数据涉及到 p = 1.69 GeV/c 时的 p(π, K)Σπ 反应。在这项分析中,我们使用广义光学定理和 T 矩阵算符研究了 Λ(1405)态的形成。我们应用了一个组合跃迁算符 T,由于 Λ(1405)形成中的初始通道混合,T 包含了 T(=T)和 T(= T)。我们还考虑了波函数中 I = 0 和 1 的可能混合,以及 Σ(1385)群体的一些背景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/e21f0e867875/pjab-95-067-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/786e22ce477f/pjab-95-067-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/8653c18b8550/pjab-95-067-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/79ffaf7b7dda/pjab-95-067-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/3b3b3a18f6c8/pjab-95-067-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/b8bcd692e374/pjab-95-067-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/e21f0e867875/pjab-95-067-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/51d6b22ec262/pjab-95-067-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/4b1d96fc9e6d/pjab-95-067-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/5b8d5f69c33a/pjab-95-067-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/b93f3ecd98d6/pjab-95-067-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/62629f07f28d/pjab-95-067-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/786e22ce477f/pjab-95-067-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/8653c18b8550/pjab-95-067-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/79ffaf7b7dda/pjab-95-067-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/3b3b3a18f6c8/pjab-95-067-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/b8bcd692e374/pjab-95-067-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/b13c5bb86813/pjab-95-067-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/c97ec5017b7e/pjab-95-067-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1aa7/6403431/e21f0e867875/pjab-95-067-g013.jpg

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本文引用的文献

1
Kaonic nuclear systems KN and KNN as decaying states.作为衰变态的K介子核系统KN和KNN
Proc Jpn Acad Ser B Phys Biol Sci. 2008;84(7):264-73. doi: 10.2183/pjab.84.264.
2
Faddeev calculation of a K- pp quasibound state.K-pp 准束缚态的法捷耶夫计算。
Phys Rev Lett. 2007 Feb 23;98(8):082301. doi: 10.1103/PhysRevLett.98.082301. Epub 2007 Feb 22.
3
Evidence for the two-pole structure of the lambda(1405) resonance.λ(1405)共振态两磁极结构的证据。
Phys Rev Lett. 2005 Jul 29;95(5):052301. doi: 10.1103/PhysRevLett.95.052301. Epub 2005 Jul 28.