Interactions of two-baryon systems with strangeness

具有奇异性的二重子系统的相互作用

• 批准号: 11640281
• 负责人: UEDA Tamotsu
• 金额: $ 1.6万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640281/
• 关键词: Strangeness; Hypernuclei; Hyperon; Nuclear forces; Hyper nuclear forces; Λ particle; Σ particle; Ξ particle

The One-Boson-Exchange-Potential (OBEP) due to Ueda, Riewe and Green for nucleonnucleon interaction is extended to ones for hyperon-nucleon interactions. The pseudoscalar, scalar and vector SU (3) nonet mesons are taken into account. They follow the SU (3) invariance. Additionally SU (3) violating mesons are introduced. Successful results are classified into the following I and II.I An OBEP is derived with the SU (3) violating mesons, σ, κ, Ω and P, for ΛΝ-ΣΝ coupled system. The potential describes correctly all the available data on the scatterings and reactions of this system. The binding energy of the hypertriton is exactly reproduced. A discriminating point of this potential from Nijmegen 97f one is made clear about the ΣNI=3/2 ^3S_1 component and how to examine it experimentally is suggested.II OBEP's for ΞΝ and ΞΞ systems are also derived witlt the SU (3) violating meson, σ. The ΞΝ OBEP is applied to Ξ^--nucleus bound states. Only the coupliung constant g_<ΞΞσ> is adjustable and determined so as to reproduce the binding energy of Ξ^--^<12>C bound state. We predict the scattering and bound states for ΞΝ and ΞΞ systems and in particular a Ξ-^<11>Β bound state in agreement with an experimental signal.

将上田、Riewe和绿色等人提出的核子核子相互作用的单玻色子交换势推广到超子核子相互作用的单玻色子交换势。我们考虑了赝标、标量和矢量SU（3）九介子。它们遵循SU（3）不变性。此外，还引入了SU（3）破坏介子。成功的结果可分为以下两类：Ⅰ.导出了Λ N-N-N耦合系统中SU（3）破坏介子σ，κ，Ω和P的OBEP。该势正确地描述了关于该系统的散射和反应的所有可用数据。超曲子的结合能被精确地再现。指出了该势与Nijmegen 97 f势的区别点，并提出了如何实验检验该势的方法，还导出了含SU（3）破坏介子σ的OBEP公式。我们将该方法应用于核束缚态。只有耦合常数g_&lt;σ_&gt;是可调的，可以确定，以便再现C_（10）-C_（10）束缚态的结合能<12>。我们预测的散射和束缚态的cBN和cBN系统，特别是与实验信号一致的cBN-^<11>B束缚态。

项目成果

T.Ueda: "Hadron Dynamics in Meson-Baryon Few-Body Systems"Few Body Systems Suppl.. (in press). (2001)

T.Ueda：“介子-重子少体系统中的强子动力学”Few Body Systems Suppl..（正在出版）。

T,Ueda: "Effective OBE Potential for ∧N and ΣN Systems"Nuclear Physics A. (印刷中). (2001)

T,Ueda：“∧N 和 ΣN 系统的有效 OBE 潜力”核物理 A.（出版中）。

上田保、冨永浩司、山口雅弘: "超核子・核子及び超核子・超核子力に対するエヒメアプローチ"素粒子論研究. (2000)

Tamotsu Ueda、Koji Tominaga、Masahiro Yamaguchi：“超核子/核子和超核子/跨核子力的爱媛方法”基本粒子理论研究（2000）。

T.Ueda,K.Tominaga 他: "Ehime Approach to YN and YY Forces"Soryushiron Kenkyu. 101. E5-E7 (2000)

T.Ueda、K.Tominaga 等：“Ehime Approach to YN and YY Forces”Soryushiron Kenkyu 101. E5-E7 (2000)

T.Ueda,K.Tominaga 他: "∧N, ∧∧ and ≡N Atractions in the Intermediate Force Range"Few-Body Systems Suppl.. 12. 372-377 (2000)

T.Ueda、K.Tominaga 等人：“中间力范围内的 ∧N、∧∧ 和 ≡N Attractions”Few-Body Systems Suppl.. 12. 372-377 (2000)