A search for deeply bound kaonic nuclear states

Suzuki, T.; Bhang, H.; Franklin, G.; Gomikawa, K.; Hayano, R.; Hayashi, T.; Ishikawa, Ken; Ishimoto, S.; Itahashi, K.; Iwasaki, M.; Katayama, Tsuneo; Kondo, Y.; Matsuda, Y.; Nakamura, Takashi; Okada, S.; Outa, H.; Quinn, B.; Sato, Masaharu; Shindo, Mitsuru; So, Hyoungmin; Strasser, P.; Sugimoto, Takashi; Suzuki, K.; Suzuki, S.; Tomono, D.; Vinodkumar, A. M.; Widmann, E.; Yamazaki, T.; Yoneyama, T.

doi:10.1016/j.nuclphysa.2005.02.087

Cited by 48 publications

(12 citation statements)

References 7 publications

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“…Motivated by the conjecture that a very strong K − nucleon potential could form a deeply bound K − ppn state [47] a systematic experimental search has been launched at the KEK facility. The first results by Suzuki et al [48] showed a structure in the missing-mass spectra in the 4 He(K − stopped , p) reaction which -due to kinematic reasons -cannot be due to hypernucleus formation (K − + 4 He) atomic → π − + 4 Λ He, 4 Λ He → p + 3 Λ H. This structure has been identified with two deeply boundKNNN states (K − + 4 He) atomic → S 0 (3115) + p (47) and (K − + 4 He) atomic → S + (3140) + n.…”

Section: Deeply Bound Kaonic States In Nucleimentioning

confidence: 94%

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

et al. 2012

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We discuss strangeness production close to threshold in p+A and A+A collision. Comparing the body of available K + , K 0 , K − , and Λ data with the IQMD transport code and for some key observables as well with the HSD transport code, we find good agreement for the large majority of the observables. The investigation of the reaction with help of these codes reveals the complicated interaction of the strange particles with hadronic matter which makes strangeness production in heavy-ion collisions very different from that in elementary interactions. We show how different strange particle observables can be used to study the different facets of this interaction (production, rescattering and potential interaction) which finally merge into a comprehensive understanding of these interactions. We identify those observables which allow for studying (almost) exclusively one of these processes to show how future high precision experiments can improve our quantitative understanding. Finally, we discuss how the K + multiplicity can be used to study the hadronic equation of state.

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Section: Deeply Bound Kaonic States In Nucleimentioning

confidence: 94%

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

et al. 2012

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“…Two claims of the observation of kaonic bound states were put forward by the E471 collaboration: the S 0 (3115) [91] and the S + (3140) [97,98]. Figure 7 shows on the left panel the missing momentum of the spectator proton in the reaction K −4 He → p(π) + X, where the peak at around 500 MeV/c was interpreted as the evidence of the S 0 (3115), a K − npp bound state with a width of < 20 MeV.…”

Section: Experimental Determination Ofkn Nmentioning

confidence: 99%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

189

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We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing theKN interaction, that is governed by the presence of the Λ(1405). We continue by showing the two-pole nature of the Λ(1405), and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton-proton collisions, while discussing the formation ofKN N bound states. We then move to the theoretical and experimental analysis of the properties of kaons and antikaons in dense nuclear matter, paying a special attention to kaonic atoms and the analysis of strangeness creation and propagation in nuclear collisions. Next, we examine the φ meson and the advances in photoproduction, protoninduced and pion-induced reactions, so as to understand its properties in dense matter. Finally, we address the dynamics of hyperons with nucleons and nuclear matter, and the connection to the phases of dense matter with strangeness in the interior of neutron stars.

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“…The extracted mass and width of the state are 3117.0 +1.5 −4.4 MeV and < 21 MeV, respectively, and its main decay mode is found to be ΣNN. The recent detailed analysis of the neutron spectrum in 4 He(K − stopped , n) [2] has made manifest a second monoenergetic peak assigned to the formation of another strange tribaryon S + (3140) with a significance of 3.7σ. The mass and width of this state are deduced to be 3140.5 +3.0 −0.8 (syst) ± 2.3(stat) MeV and < 21.6 MeV, respectively, its main decay mode being Σ ± NN.…”

Section: Introductionmentioning

confidence: 99%

Strange tribaryons

et al. 2006

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We use two-body potentials derived from a constituent quark cluster model to analyze the bound-state problem of the ΣN N system. The observables of the two-body subsystems, N N and ΣN , are well reproduced. We do not find ΣN N bound states, but there are two attractive channels with a resonance close above the three-body threshold. These channels are the (I, J) = (1, 1/2) and (0, 1/2), their quantum numbers, widths and energy ordering consistent with the recently measured strange tribaryons from the 4 He(K

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A search for deeply bound kaonic nuclear states

Cited by 48 publications

References 7 publications

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

Strangeness in nuclei and neutron stars

Strange tribaryons

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