~ 3 He和~ 4 He吸收K时共振形成K-p准束缚态的λ（1405）Δ的实验证实

λ（1405）的单极性质和K-pp的结构

Single-pole nature of Lambda (1405) and structure of K-pp

我们从λ（1405）是一个K-p准束缚态出发，用变分方法求解了K-pp的结构，λ * 的质量为1405 MeV/c ~ 2。K-pp的结构揭示了一个分子特征，即“原子中心”λ * 中的K-在与另一个质子产生强共价键中起着关键作用。深束缚的Kbar核系统是由这种“超强”核力形成的，这种“超强”核力是由于迁移的实玻色子Kbar，一种海特勒-伦敦-海森堡，它过度补偿了刚性核的不可压缩性。结合基于手征SU（3）动力学的λ（1405）双极图讨论了λ（1405）反相的理论背景。详细的分析揭示了可观测的λ（1405）的单极性质。实验上可观测到的σ π不变质量有两种，通常的T22不变质量和转换的T21不变质量。确定Lambda* 质量是1405 MeV还是1420 MeV是至关重要的。由氘核静止时的K吸收得到的T21不变质量可以提供关于这个λ * 质量问题的决定性信息。

Clear indication of a strong I=0 Kbar-N attraction in the Lambda (1405) region from the CLAS photo-production data

Possible existence of deeply bound kaonic nuclear systems was proposed Akaishi and Yamazaki (2002} more than a decade ago, based on an ansatz that the Lambda* = Lambda(1405) mass is 1405 MeV/c2, where the Lambda* is a Kbar-N quasi-bound state decaying to Sigma-pi. Recently, a large number of data on photo-production of Lambda(1405) in the gamma p to K+ pi{0+-} Sigma{0-+} reaction were provided by the CLAS collaboration Moriya et al.(2013}, and double-pole structure of the Lambda* has been intensively discussed by chiral dynamics analyses {Roca (2013),Mai 2015}, whereas we show that a Lambda* m…

碱性K核团簇K-pp及其在p + p -> K+ + X反应中的增强形成

The basic K nuclear cluster K- pp and its enhanced formation in the p + p -> K+ + X reaction

本文从λ（1405）共振（λ ~*）是K-p束缚态出发，用变分法精确求解K-p核团簇的三体系统，全面研究了K-p核团簇的结构。我们已经发现，我们最初对K-pp作为一个紧凑束缚系统（M = 2322 $ MeV/c2, B = 48 MeV and Gamma = 60 MeV remains unchanged by varying the Kba-rN and NN interactions widely as far as they reproduce Lambda(1405). The structure of K- pp reveals a molecular feature, namely, the K- in Lambda* as an "atomic center" plays a key role in producing strong covalent bonding with the other proton. We have shown that the elementary process, p + p -> K+ + Lambda* + p, which occurs in a short impact parameter and with a large momentum transfer (Q ~ 1.6$ GeV/c）存在的预测导致参与质子对λ * …

迁移Kbar介子引起的超强核力--Kaonic核团簇中Heitler-London-Heisenberg方案的复兴

Super strong nuclear force caused by migrating Kbar mesons - Revival of the Heitler-London-Heisenberg scheme in kaonic nuclear clusters

本文从λ（1405）共振（~ λ *）是K-p束缚态出发，用变分法求解了K-p三体系统，全面地研究了K-p的结构。K-pp的结构揭示了一个分子特征，即λ * 中的K-作为“原子中心”在与另一个质子产生强共价键中起着关键作用。指出强束缚Kbar核系统是由迁移的实玻色子Kbar产生的“超强”核力形成的，而正常的核力是由虚π介子介导的.我们已经证明，在短的碰撞参量和大的动量转移中发生的基本过程p + p -> K+ + Lambda* + p，导致所涉及的质子对Lambda* 的异常大的自陷，因为Lambda*-p系统作为一个向K-pp传播的紧凑门口态存在。

Strong binding and shrinkage of single and double kbar~nuclear systems (K^-pp, K^-ppn, K^-K^-p and K^-K^-pp) predicted by Faddeev-Yakubovsky calculations

Non-relativistic Faddeev and Faddeev-Yakubovsky calculations were made for K^-pp, K^- ppn, K^-K^-p and K^- K^-pp kaonic nuclear clusters, where the quasi bound states were treated as bound states by employing real separable potential models for the K^ - - K^ - and the K^ - -nucleon interactions as well as for the nucleon-nucleon interaction. The binding energies and spatial shrinkages of these states, obtained for various values of the Kbar N interaction, were found to increase rapidly with the Kbar N interaction strength. Their behaviors are shown in a reference diagram, where possible change…