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The $\Lambda$ and neutron decay widths of $\Xi$ hypernuclear states, based on calculated $\Xi N \to \lala$ mixing amplitudes, are estimated. The widths which result from using the Nijmegen Model D interaction are sufficiently small, of…

核理论 · 物理学 2009-09-25 D. J. Millener , C. B. Dover , A. Gal

A major source of uncertainty in modeling the strangeness-rich interiors of neutron stars arises from the poorly constrained two-body and three-body interactions among hyperons and nucleons. We perform a comprehensive Bayesian analysis of…

核理论 · 物理学 2026-04-28 X. D. Sun , S. C. Han , J. N. Hu , A. Li

The most recent development of the quark-meson coupling (QMC) model, in which the effect of the mean scalar field in-medium on the hyperfine interaction is also included self-consistently, is used to compute the properties of finite…

核理论 · 物理学 2009-06-19 Pierre A. M. Guichon , Anthony W. Thomas , Kazuo Tsushima

The energy spectra of light-mass kaonic nuclei were investigated using the theoretical framework of the $0s$-orbital model with zero-range $\bar{K} N$ and $\bar{K}\bar{K}$ interactions of effective single-channel real potentials. The…

核理论 · 物理学 2021-06-30 Yoshiko Kanada-En'yo

We study the effects of channel coupling in the excitation dynamics of giant resonances in relativistic heavy ions collisions. For this purpose, we use a semiclassical approximation to the Coupled-Channels problem and separate the Coulomb…

核理论 · 物理学 2008-11-26 C. A. Bertulani , L. F. Canto , M. S. Hussein , A. F. R. de Toledo Piza

The nature of the Lambda(1405) is discussed based on the unitarised coupled-channels approach with chiral dynamics (chiral unitary model). This approach describes the Kbar N scattering cross sections and the Lambda(1405) spectra…

核理论 · 物理学 2010-03-26 D. Jido , T. Sekihara , Y. Ikeda , T. Hyodo , Y. Kanada-En'yo , E. Oset

We investigate the structure of the neutron-rich $\Lambda$-hypernucleus $_{\Lambda}^{10}$Li by using microscopic shell-model calculations considering a $\Lambda$-$\Sigma$ coupling effect. The calculated $\Sigma$-mixing probability in the…

核理论 · 物理学 2009-03-04 A. Umeya , T. Harada

We investigate the two-particle intensity correlation function of $\Lambda$ in relativistic heavy-ion collisions. We find that the behavior of the $\Lambda\Lambda$ correlation function at small relative momenta is fairly sensitive to the…

核理论 · 物理学 2015-03-05 Kenji Morita , Takenori Furumoto , Akira Ohnishi

In-medium $\Lambda N$ interactions are crucial in hypernuclei and neutron star physics. In this work, we study the in-medium $\Lambda N$ interaction within the relativistic Brueckner-Hartree-Fock (RBHF) framework, employing the…

核理论 · 物理学 2025-03-25 Ru-You Zheng , Zhi-Wei Liu , Li-Sheng Geng , Jin-Niu Hu , Sibo Wang

The positive-parity states of $^{25}_{\ \Lambda}$Mg with a $\Lambda$ hyperon in $s$ orbit were studied with the antisymmetrized molecular dynamics for hypernuclei. We discuss two bands of $^{25}_{\ \Lambda}$Mg corresponding to the…

核理论 · 物理学 2015-05-30 Masahiro Isaka , Hiroaki Homma , Masaaki Kimura , Akinobu Doté , Akira Ohnishi

We examine the $\Lambda$-${}^4\mathrm{He}$ ($\alpha$) and $\Xi \alpha$ momentum correlation in high-energy collisions to further elucidate the properties of the hyperon-nucleon interactions. For the $\Lambda\alpha$ system, we compare…

核理论 · 物理学 2025-01-20 Asanosuke Jinno , Yuki Kamiya , Tetsuo Hyodo , Akira Ohnishi

The LHCb Collaboration announced the observation of doubly charmed baryon through $\Xi_{c c}^{++} \rightarrow \Lambda_{c}^{+} K^{-} \pi^{+} \pi^{+}$ in 2017. Since then, a series of studies of doubly heavy baryons have been presented.…

高能物理 - 唯象学 · 物理学 2021-02-01 De-Min Li , Xi-Ruo Zhang , Ye Xing , Ji Xu

We include the leading charge symmetry breaking contributions into the hyperon-nucleon interactions derived within chiral effective field theory up to next-to-leading order. Two low energy constants are determined using the experimentally…

核理论 · 物理学 2022-02-28 Andreas Nogga , Johann Haidenbauer , Ulf-G. Meißner

This work is a sequel to our two 2023 publications [PLB 837 137669, NPA 1039 122725] where fitting 14 1$s_\Lambda$ and 1$p_\Lambda$ single-particle binding energies in hypernuclei across the periodic table led to a well-defined…

核理论 · 物理学 2025-10-16 Eliahu Friedman , Avraham Gal

$\Sigma^-$ hyperon component of the $^{10}_\Lambda$Li wave function is studied. The $\Sigma^-$ admixture is vital for production of neutron-rich $\Lambda$ hypernuclei via mesonic beams. We use a simplified shell model wave function for the…

核理论 · 物理学 2013-12-25 D. E. Lanskoy , A. Sinyakova

Experimental evidence exists that the $\Xi$-nucleus interaction is attractive. We search for $NN\Xi$ and $NNN\Xi$ bound systems on the basis of the AV8 $NN$ potential combined with either a phenomenological Nijmegen $\Xi N$ potential or a…

核理论 · 物理学 2020-03-16 E. Hiyama , K. Sasaki , T. Miyamoto , T. Doi , T. Hatsuda , Y. Yamamoto , Th. A. Rijken

Hypernuclei are bound states of neutrons, protons and one or two hyperons, thus extending the nuclear landscape to a third dimension. They also encode information about the baryon-baryon and three-baryon interactions. Here, we review recent…

核理论 · 物理学 2025-08-08 Johann Haidenbauer , Ulf-G. Meißner , Andreas Nogga

The nonmesonic weak decay of $\Lambda$ hypernuclei is studied in a shell model framework. A complete strangeness-changing weak $\Lambda N \to NN$ transition potential, based on one boson exchange, is constructed by including the exchange of…

核理论 · 物理学 2008-11-26 A. Parreño , A. Ramos , C. Bennhold

Binding energies of light, $A\leq 6$, $\Lambda\Lambda$ hypernuclei are calculated using the stochastic variational method in a pionless effective field theory (EFT) approach at leading order with the purpose of assessing critically the…

核理论 · 物理学 2020-12-22 L. Contessi , M. Schäfer , N. Barnea , A. Gal , J. Mareš

We study the gamma p ---> K^+ Lambda(1405) reaction at energies close to threshold using a chiral unitary model where the resonance is generated dynamically from K^-p interaction with other channels constructed from the octets of baryons…

核理论 · 物理学 2009-10-31 J. C. Nacher , E. Oset , H. Toki , A. Ramos