Status of the J-PARC E07, Systematic Study of Double Strangeness Nuclei with the Hybrid Emulsion Method

Yoshida, Junya; Agari, K.; Ahn, J. K.; Akaishi, Takao; Akazawa, Y.; Ashikaga, S.; Bassalleck, B.; Bleser, S.; Ekawa, H.; Endo, Yuichi; Fujikawa, Yuki; Fujioka, N.; Fujita, Masaya; Goto, R.; Han, Yuncheng; Hasegawa, Shoichi; Hashimoto, Takashi; Hayakawa, Shuhei; Hayakawa, Tomokatsu; Hayata, E.; Hicks, K.; Hirose, E.; Hirose, M.; Honda, Ryumon; Hoshino, K.; Hoshino, Satoshi; Hosomi, K.; Hwang, S. H.; Ichikawa, Y.; Ichikawa, M.; Ieiri, M.; Imai, K.; Inaba, K.; Ishikawa, Yuji; Iskendir, A.; Ito, H.; Ito, K.; Jung, Won Young; Kanatsuki, Shunsuke; Kanauchi, H.; Kasagi, A.; Kawai, Takeshi; Kim, M. H.; Kim, S. H.; Kinbara, Shinji; Kiuchi, R.; Kobayashi, H.; Kobayashi, Kazuya; Koike, T.; Koshikawa, A.; Lee, J. Y.; Lee, J. W.; L., T.; Matsumoto, Shota; Minakawa, M.; Miwa, K.; Moe, A. T.; Moon, Taejin; Moritsu, Manabu; Nagase, Y.; Nakada, Yasuki; Nakagawa, Mayumi; Nakashima, D.; Nakazawa, Kimitaka; Nanamura, T.; Naruki, M.; Nyaw, A. N. L.; Ogura, Y.; Ohashi, M.; Oue, K.; Ozawa, Seiji; Pochodzalla, J.; Ryu, Sun Young; Sako, H.; Sasaki, Yutaka; Satō, Shigeru; Sato, Y.; Schupp, Falk; Shirotori, K.; Soe, M. M.; Soe, Myint Kyaw; Sohn, J. Y.; Sugimura, Hitoshi; Suzuki, Kazuki; Takahashi, Hajime; Takahashi, T.; Takahashi, Yasuhiro; Takeda, Tomoya; Tamura, H.; Tanida, K.; Theint, Aye Moh Moh; Tint, Khin Than; Toyama, Yuichi; Ukai, M.; Umezaki, E.; Watabe, Toyoki; Watanabe, K.; Yamamoto, T. O.; Yang, S. B.; Yoon, C. S.; Yoshimoto, Masahiro; Zhang, D. H.; Zhang, Z.

doi:10.7566/jpscp.26.023006

Cited by 3 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Up to now, two single events involving Ξ hypernuclei, 12 Ξ − Be [ (Kchaustov, 2000)] and 15 Ξ − C (Nakazawa et al, 2015), have been reported [ (Yoshida et al, 2019)]. (Yoshimoto, 2021).…”

Section: Hyperonic Single-particle Potentialsmentioning

confidence: 99%

Nuclear Symmetry Energy and Hyperonic Stars in the QMC Model

Stone

Guichon

Thomas

2022

Front. Astron. Space Sci.

View full text Add to dashboard Cite

The nuclear symmetry energy, together with the other saturation properties of symmetric nuclear matter, plays an important role in low energy nuclear structure of terrestrial systems, as well as astrophysical objects. In particular, its density dependence, both in sub- and supra-saturation regions in high density matter in neutron stars, is of utmost significance and has been a subject of active research for decades, usually within a mean-field framework. We report results obtained using the latest version of Quark-Meson-Coupling Model (QMC-A) with just three variable parameters, the baryon-meson coupling constants in free space. It is shown that these parameters can be determined directly using nuclear matter (NM) properties at saturation; two parameters of symmetric nuclear matter (SNM), the baryon number density and the energy per particle, and the symmetry energy coefficient of asymmetric nuclear matter (ANM). The effects of uncertainties in the these parameters and propagation of these uncertainties through the calculation of properties of dense hyperonic matter and cold neutron stars are demonstrated. This approach leads to new limits on both the NM parameters and the QMC coupling constants. The results, which exploit the unique features of the QMC model, are discussed and future prospects are outlined.

show abstract

Section: Hyperonic Single-particle Potentialsmentioning

confidence: 99%

Nuclear Symmetry Energy and Hyperonic Stars in the QMC Model

Stone

Guichon

Thomas

2022

Front. Astron. Space Sci.

View full text Add to dashboard Cite

show abstract

Equation of state of hot dense hyperonic matter in the Quark–Meson-Coupling (QMC-A) model

Stone

Dexheimer

Guichon

et al. 2021

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We report a new equation of state (EoS) of cold and hot hyperonic matter constructed in the framework of the quark-meson-coupling (QMC-A) model. The QMC-A EoS yields results compatible with available nuclear physics constraints and astrophysical observations. It covers the range of temperatures from T=0 to 100 MeV, entropies per particle S/A between 0 and 6, lepton fractions from YL=0.0 to 0.6, and baryon number densities nB=0.05-1.2 fm-3. Applications of the QMC-A EoS are made to cold neutron stars (NS) and to hot proto-neutron stars (PNS) in two scenarios, (i) lepton rich matter with trapped neutrinos (PNS-I) and (ii) deleptonized chemically equilibrated matter (PNS-II). We find that the QMC-A model predicts hyperons in amounts growing with increasing temperature and density, thus suggesting not only their presence in PNS but also, most likely, in NS merger remnants. The nucleon-hyperon phase transition is studied through the adiabatic index and the speed of sound cs. We observe that the lowering of (cs/c)2 to and below the conformal limit of 1/3, is strongly correlated with the onset of hyperons. Rigid rotation of cold and hot stars, their moments of inertia and Kepler frequencies are also explored. The QMC-A model results are compared with two relativistic models, the chiral mean field model (CMF), and the generalized relativistic density functional (GRDF) with DD2 (nucleon-only) and DD2Y-T (full baryon octet) interactions. Similarities and differences are discussed.

show abstract

Relativistic hypernuclear compact stars with calibrated equations of state

et al. 2020

View full text Add to dashboard Cite

Within the covariant density functional theory of hypernuclear matter we build a series of equations of state for hypernuclear compact stars, by calibrating the coupling constants of the Ξ-hyperon to the experimental binding energy of the single-Ξ hypernuclei 15 Ξ − C and 12 Ξ − Be. Coupling constants of the Λ-hyperon to nucleons have been calibrated on a vast collection of experimental data on single Λ-hypernuclei and we employ those values. Uncertainties on the couplings of the Σ-hyperon to nuclear matter, due to lack of experimental data, are accounted for by allowing for a wide variation of the well depth of Σ at rest in symmetric saturated nuclear matter. To account for uncertainties in the nucleonic sector at densities much larger than n 0 , a rich collection of parametrizations is employed, some of them in agreement with existing constraints from nuclear physics and astrophysics. Neutron star properties are investigated with all these calibrated equations of state. The effects of the presence of hyperons on the radius, on the tidal deformability, on the moment of inertia, and on the nucleonic direct Urca process are discussed. The sensitivity of the hyperonic direct Urca processes to uncertainties in the nucleonic and hyperonic sectors is also addressed. It is shown that the relative variations of the radius, tidal deformability and moment of inertia from the values that characterize purely nucleonic stars are linearly correlated with the strangeness fraction. The maximum radius deviation, obtained for most massive neutron stars, is ≈ 10%. The reduction of the maximum mass, triggered by nucleation of strangeness, is estimated at ≈ 15 − 20%, out of which 5% comes from insufficient information on the Σ-hyperon interactions. A total of 44 calibrated hyperonic equations of state are published as Supplemental Material.

show abstract

Status of the J-PARC E07, Systematic Study of Double Strangeness Nuclei with the Hybrid Emulsion Method

Cited by 3 publications

References 13 publications

Nuclear Symmetry Energy and Hyperonic Stars in the QMC Model

Nuclear Symmetry Energy and Hyperonic Stars in the QMC Model

Equation of state of hot dense hyperonic matter in the Quark–Meson-Coupling (QMC-A) model

Relativistic hypernuclear compact stars with calibrated equations of state

Contact Info

Product

Resources

About