The first evidence of a deeply bound state of Xi--14N system

Nakazawa, Kimitaka; Endo, Yuichi; Fukunaga, S.; Hoshino, K.; Hwang, S. H.; Imai, K.; Ito, H.; Itonaga, K.; Kanda, Takayuki; Kawasaki, M.; Kim, J. H.; Kinbara, Shinji; Kobayashi, H.; Mishina, Akihiro; Ogawa, S.; Shibuya, H.; Sugimura, Toshimi; Soe, Myint Kyaw; Takahashi, Hajime; Takahashi, T.; Tint, Khin Than; Umehara, Kaori; Yoon, C. S.; Yoshida, Junya

doi:10.1093/ptep/ptv008

Cited by 135 publications

(54 citation statements)

References 21 publications

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“…As for the strangeness −2 systems, the Nagara event (Takahashi et al 2001) and other experiments providing consistency checks established the size of the ΛΛ interaction to be mildly attractive, (Dover & Gal 1983), while the missing-mass spectra of the -+ K K , ( ) reaction on a 12 C target suggest a milder attraction of −20 MeV (Fukuda et al 1998) or ∼−14±2 MeV (Khaustov et al 2000). These values are compatible with the recent analysis of the nuclear emulsion event KISO, claiming to have observed a nuclear bound state of the Ξ − -14 N system with a binding energy of 4.38±0.25 MeV (Nakazawa et al 2015). From the above considerations, we fix the hyperon potentials in SNM to the following values: …”

Section: Hyperons and Magnetic Fieldsupporting

confidence: 84%

Equation of State for Nucleonic and Hyperonic Neutron Stars With Mass and Radius Constraints

Tolós

Centelles

Ramos

2016

ApJ

111

117

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We obtain a new equation of state for the nucleonic and hyperonic inner core of neutron stars that fulfils the 2 M e observations as well as the recent determinations of stellar radii below 13 km. The nucleonic equation of state is obtained from a new parameterization of the FSU2 relativistic mean-field functional that satisfies these latest astrophysical constraints and, at the same time, reproduces the properties of nuclear matter and finite nuclei while fulfilling the restrictions on high-density matter deduced from heavy-ion collisions. On the one hand, the equation of state of neutron star matter is softened around saturation density, which increases the compactness of canonical neutron stars leading to stellar radii below 13 km. On the other hand, the equation of state is stiff enough at higher densities to fulfil the 2 M e limit. By a slight modification of the parameterization, we also find that the constraints of 2 M e neutron stars with radii around 13 km are satisfied when hyperons are considered. The inclusion of the high magnetic fields present in magnetars further stiffens the equation of state. Hyperonic magnetars with magnetic fields in the surface of ∼10 15 G and with values of ∼10 18 G in the interior can reach maximum masses of 2 M e with radii in the 12-13 km range.

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Section: Hyperons and Magnetic Fieldsupporting

confidence: 84%

Equation of State for Nucleonic and Hyperonic Neutron Stars With Mass and Radius Constraints

Tolós

Centelles

Ramos

2016

ApJ

111

117

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“…Here the aim is to explore the possibility to establish a ΞN interaction that is still in line with all the experimental constraints for ΛΛ and ΞN scattering, but at the same time is somewhat more attractive. Recent experimental evidence for the existence of Ξ-hypernuclei [183] suggests that the inmedium interaction of the Ξ-hyperon should be moderately attractive [184].…”

Section: A Hyperon-nucleon and Hyperon-hyperon Scatteringmentioning

confidence: 99%

Hyperon-Nuclear Interactions From SU(3) Chiral Effective Field Theory

Petschauer¹,

Haidenbauer²,

Kaiser³

et al. 2020

Front. Phys.

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The interaction between hyperons and nucleons has a wide range of applications in strangeness nuclear physics and is a topic of continuing great interest. These interactions are not only important for hyperon-nucleon scattering but also essential as basic input to studies of hyperon-nuclear fewand many-body systems including hypernuclei and neutron star matter. We review the systematic derivation and construction of such baryonic forces from the symmetries of quantum chromodynamics within non-relativistic SU(3) chiral effective field theory. Several applications of the resulting potentials are presented for topics of current interest in strangeness nuclear physics.Recently an alternative NLO χEFT potential for Y N

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“…Concerning the S = −2 sector the interaction of Ξ hyperons with nuclei is not well constrained experimentally or phenomenologically [47]. Recently a Ξ-hypernucleus candidate has been detected [48] and ongoing measurements suggest that the N-Ξ interaction is weakly attractive [49]. Recent lattice QCD calculations from the HAL QCD collaboration showed preliminary results on the p-Ξ − correlation Table 1 The p-Λ scattering parameters of the Usmani and the chiral potentials.…”

Section: Nn and Ny Interaction Potentialsmentioning

confidence: 99%

A femtoscopic correlation analysis tool using the Schrödinger equation (CATS)

et al. 2018

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We present a new analysis framework called "Correlation Analysis Tool using the Schrödinger equation" (CATS) which computes the two-particle femtoscopy correlation function C(k), with k being the relative momentum for the particle pair. Any local interaction potential and emission source function can be used as an input and the wave function is evaluated exactly. In this paper we present a study on the sensitivity of C(k) to the interaction potential for different particle pairs: p-p, p-, K − -p, K + -p, p-− and -. For the p-p Argonne v 18 and Reid Soft-Core potentials have been tested. For the other pair systems we present results based on strong potentials obtained from effective Lagrangians such as χ EFT for p-, Jülich models for K(K)-N and Nijmegen models for -. For the p-− pairs we employ the latest lattice results from the HAL QCD collaboration. Our detailed study of different interacting particle pairs as a function of the source size and different potentials shows that femtoscopic measurements can be exploited in order to constrain the final state interactions among hadrons. In particular, small collision systems of the order of 1 fm, as produced in pp collisions at the LHC, seem to provide a suitable environment for quantitative studies of this kind.

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The first evidence of a deeply bound state of Xi--14N system

Cited by 135 publications

References 21 publications

Equation of State for Nucleonic and Hyperonic Neutron Stars With Mass and Radius Constraints

Equation of State for Nucleonic and Hyperonic Neutron Stars With Mass and Radius Constraints

Hyperon-Nuclear Interactions From SU(3) Chiral Effective Field Theory

A femtoscopic correlation analysis tool using the Schrödinger equation (CATS)

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