QCD and the strange baryon spectrum

Hyodo, Tetsuo; Niiyama, M.

doi:10.1016/j.ppnp.2021.103868

Cited by 46 publications

(18 citation statements)

References 246 publications

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“…[31] that there are actually two poles with I = 0 and S = −1 in the Λ (1405) energy region. This fact has been confirmed in many subsequent studies [12,13,14], including the cloudy bag model [41], meson-exchange model [42], dynamical coupled-channel model [43,44], and Hamiltonian effective field theory [45]. One pole is located near the KN threshold with a narrow decay width.…”

Section: !"#$%Andmentioning

confidence: 57%

“…Since then a large amount of theoretical and experimental investigations have been devoted to clarify the nature of the Λ (1405) (see Refs. [9,12,13,14]). In particular, recent developments have firmly established the following basic properties of the Λ (1405):…”

Section: The λ (1405) Resonancementioning

confidence: 99%

“…Poles of the scattering amplitude T i j in the complex energy plane represent the generalized eigenenergies of unstable resonances [14]. Usually there is a single pole for a resonance state, whose position z in the complex energy plane is related to the mass M R and the width Γ R as…”

Section: !"#$%Andmentioning

confidence: 99%

“…Table 2 Resonance poles of L (1405) and L (1380) in PDG [1]. [14,15] Fig. 6 Resonance poles of L (1405) and L (1380) in the complex energy (z) plane.…”

Section: Theory Of Kaon-nuclear Systems 11mentioning

confidence: 99%

“…We then describe few-body and many-body kaon-nuclear systems, including a discussion of kaon properties in nuclear matter. We also refer here to several review articles covering related topics [7,8,9,10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Theory of kaon-nuclear systems

Hyodo¹,

Weise²

2022

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The strong interaction between an antikaon and a nucleon is at the origin of various interesting phenomena in kaon-nuclear systems. In particular, the interaction in the isospin I = 0 channel is sufficiently attractive to generate a quasibound state, the Λ (1405) resonance, below the KN threshold. Based on this picture, it may be expected that the KN interaction also generates quasi-bound states in kaon-nuclear systems, sometimes called kaonic nuclei. At the same time, the KN quasi-bound picture of the Λ (1405) is also related to the discussion of hadronic molecules in hadron spectroscopy. Here an overview is presented of the theoretical studies developed for kaon-nucleon and kaon-nuclear systems. We start from the modern understanding of the Λ (1405) resonance. We then discuss the KN interaction and various aspects of few-body kaonic nuclei. Heavier kaon-nuclear systems are examined from the viewpoint of nuclear many-body physics, with focus on the properties of antikaons in nuclear matter. Related topics, such as the K − p momentum correlation functions in high-energy collisions and the studies of kaonic atoms, are also discussed.

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Section: !"#$%Andmentioning

confidence: 57%

Section: The λ (1405) Resonancementioning

confidence: 99%

Section: !"#$%Andmentioning

confidence: 99%

“…Table 2 Resonance poles of L (1405) and L (1380) in PDG [1]. [14,15] Fig. 6 Resonance poles of L (1405) and L (1380) in the complex energy (z) plane.…”

Section: Theory Of Kaon-nuclear Systems 11mentioning

confidence: 99%