High Resolution Spectroscopy of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mn /><mml:mi>Λ</mml:mi><mml:mn>12</mml:mn></mml:msubsup><mml:mi mathvariant="normal">B</mml:mi></mml:math>Hypernucleus Produced by the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy="false">(</mml:mo><mml:mi>e</mml:mi><mml:mo>,</mml:mo><mml:msup><mml:mi>e</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></

Miyoshi, T.; Sarsour, M.; Yuan, L.; Zhu, X.; Ahmidouch, A.; Ambrozewicz, P.; Androić, D.; Angelescu, T.; Asaturyan, R.; Avery, S.; Baker, O. K.; Bertovic, I.; Breuer, H.; Carlini, R.; Cha, J.; Chrien, R.E.; Christy, M. E.; Cole, Leon J.; Danagoulian, S.; Dehnhard, D.; Elaasar, M.; Empl, A.; Ent, R.; Fenker, H.; Fujii, Y.; Furić, M.; Gan, L.; Garrow, K.; Gasparian, A.; Guèye, P.; Harvey, M.; Hashimoto, Osamu; Hinton, W.; Hu, B.; Hungerford, E.; Jackson, C.; Johnston, K.; Juengst, H. G.; Keppel, C.; Lan, K.; Liang, Y.; Likhachev, V.P.; Liu, J. H.; Mack, D.; Margaryan, A.; Markowitz, P.; Martoff, J.; Mkrtchyan, H.; Nakamura, S. N.; Petković, Tomislav; Reinhold, J.; Roche, J.; Sato, Y.; Sawafta, R.; Šimičević, N.; Smith, G. A.; Stepanyan, S.; Tadevosyan, V.; Takahashi, T.; Tanida, K.; Tang, L.; Ukai, M.; Uzzle, A.; Vulcan, W.; Wells, S. P.; Wood, S. A.; Xu, G.; Yamaguchi, Hiroaki; Yan, Chenyu

doi:10.1103/physrevlett.90.232502

Cited by 79 publications

(26 citation statements)

References 25 publications

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“…We demonstrate that both formulations give the same results in the A = 4 system, and present a compilation of absolute ground-and excited-state energies for 4 Λ H and 4 Λ He for the Y N interaction from leading-order chiral EFT with a state-ofthe-art chiral nucleonic Hamiltonian containing NN and NNN interactions. We also show that, even in the four-body system, the SRG evolution of the Y N interaction induces strong repulsive Y NN terms that have to be included explicitly in order to get precise results.…”

Section: Discussionmentioning

confidence: 80%

“…This breaking allows new types of baryonbaryon interactions such as antisymmetric spin-orbit forces, which are forbidden by isospin symmetry [2].A variety of experiments were performed to study properties of hypernuclei. From the early emulsion experiments (see, e.g., Ref.[3]) to modern accelerator-based experiments, a lot of effort went into the measurement of not only ground-state properties [4][5][6][7][8][9], but also the determination of hypernuclear spectra by gamma-ray spectroscopy [10][11][12][13][14]. Even transition strengths are experimentally accessible [15].…”

mentioning

confidence: 99%

“…(Color online) Absolute ground-state energy of (a)4 He and (b) its daughter hypernucleus5 Λ He. The oscillator frequency is Ω = 20 MeV.…”

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confidence: 99%

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Hypernuclear no-core shell model

et al. 2018

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We extend the No-Core Shell Model (NCSM) methodology to incorporate strangeness degrees of freedom and apply it to single-Λ hypernuclei. After discussing the transformation of the hyperon-nucleon (YN) interaction into Harmonic-Oscillator (HO) basis and the Similarity Renormalization Group transformation applied to it to improve model-space convergence, we present two complementary formulations of the NCSM, one that uses relative Jacobi coordinates and symmetry-adapted basis states to fully exploit the symmetries of the hypernuclear Hamiltonian, and one working in a Slater determinant basis of HO states where antisymmetrization and computation of matrix elements is simple and to which an importance-truncation scheme can be applied. For the Jacobi-coordinate formulation, we give an iterative procedure for the construction of the antisymmetric basis for arbitrary particle number and present the formulae used to embed two-and three-baryon interactions into the many-body space. For the Slater-determinant formulation, we discuss the conversion of the YN interaction matrix elements from relative to single-particle coordinates, the importance-truncation scheme that tailors the model space to the description of the low-lying spectrum, and the role of the redundant center-of-mass degrees of freedom. We conclude with a validation of both formulations in the four-body system, giving converged ground-state energies for a chiral Hamiltonian, and present a short survey of the A ≤ 7 hyper-helium isotopes. PACS numbers: 21.80.+a, 21.10.Dr, 21.60.De, 05.10.CcStrangeness impacts many fields of physics from heavy-ion collisions to nuclear and neutron star structure. Of particular interest are hypernuclei, which can be produced and studied in the laboratory. Hypernuclei are many-body systems consisting of nucleons and hyperons, baryons that carry strangeness, like the Λ 0 , Σ 0,± , or the Ξ 0,− . These hyperons are distinguishable from the nucleons and can be used as probes for the interior structure of the nucleonic core. Furthermore, hypernuclei extend the isospin SU(2), which is a good approximate symmetry in nuclei, to flavor SU(3) that is broken by the significant mass difference between the strange and the up and down quarks [1]. This breaking allows new types of baryonbaryon interactions such as antisymmetric spin-orbit forces, which are forbidden by isospin symmetry [2].A variety of experiments were performed to study properties of hypernuclei. From the early emulsion experiments (see, e.g., Ref.[3]) to modern accelerator-based experiments, a lot of effort went into the measurement of not only ground-state properties [4][5][6][7][8][9], but also the determination of hypernuclear spectra by gamma-ray spectroscopy [10][11][12][13][14]. Even transition strengths are experimentally accessible [15]. This effort was complemented by various theory developments, e.g., Skyrmeand Brueckner-Hartree-Fock models [16][17][18], the shell model [19][20][21][22][23][24], cluster models [25][26][27][28], and few-body methods [29][30][31][32][3...

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Section: Discussionmentioning

confidence: 80%

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confidence: 99%

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Hypernuclear no-core shell model

et al. 2018

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“…Gel formation is also aided by thermally-reversible transition of random coils into double helical gellan gum chain complexes that aggregate to form junction zones. These zones can be stabilized by divalent ions such as Ca 2+ , thus preventing electrostatic repulsion between carboxyl groups (Miyoshi et al, 1996). As a result, stable gels can be formed by heating gellan gum to the random coil phase, addition of Ca 2+ , cooling to allow transition to the stiffer double helical form, and formation of junction zones stabilized by Ca 2+ (Oliveira et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Enzymatic mineralization of gellan gum hydrogel for bone tissue-engineering applications and its enhancement by polydopamine

Douglas

Włodarczyk

Pamuła

et al. 2012

J Tissue Eng Regen Med

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Interest is growing in the use of hydrogels as bone tissue-engineering (TE) scaffolds due to advantages such as injectability and ease of incorporation of active substances such as enzymes. Hydrogels consisting of gellan gum (GG), an inexpensive calcium-crosslinkable polysaccharide, have been applied in cartilage TE. To improve GG suitability as a material for bone TE, alkaline phosphatase (ALP), an enzyme involved in mineralization of bone by cleaving phosphate from organic phosphate, was incorporated into GG hydrogels to induce mineralization with calcium phosphate (CaP). Incorporated ALP induced formation of apatite-like material on the submicron scale within GG gels, as shown by FTIR, SEM, EDS, XRD, ICP-OES, TGA and von Kossa staining. Increasing ALP concentration increased amounts of CaP as well as stiffness. Mineralized GG was able to withstand sterilization by autoclaving, although stiffness decreased. In addition, mineralizability and stiffness of GG was enhanced by the incorporation of polydopamine (PDA). Furthermore, mineralization of GG led to enhanced attachment and vitality of cells in vitro while cytocompatibility of the mineralized gels was comparable to one of the most commonly used bone substitute materials. The results proved that ALP-mediated enzymatic mineralization of GG could be enhanced by functionalization with PDA.

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“…Therefore, we attempted to optimize the angular acceptance of HES, taking into account the S/N and yield of Λ hypernuclei. For the purpose, we adopted the "tilt method", which was developed and proven to work sufficiently in the previous (e, e ′ K + ) experiment (JLab E01-011) [47,48]. The tilt method is a method of angular acceptance optimization in which the magnetic spectrometer is tilted vertically, as shown in Fig.…”

Section: The Tilt Methods In Hesmentioning

confidence: 99%

Experimental techniques and performance of Λ-hypernuclear spectroscopy with the (e,e′
Gogami
¹
,
Chen
²
,
Fujii
³

et al. 2018
Nuclear Instruments and Methods in Physics Research Section A:
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The missing-mass spectroscopy of Λ hypernuclei via the (e, e ′ K + ) reaction has been developed through experiments at JLab Halls A and C in the last two decades. For the latest experiment, E05-115 in Hall C, we developed a new spectrometer system consisting of the HKS and HES; resulting in the best energy resolution (∆E ≃ 0.5-MeV FWHM) and BΛ accuracy (∆BΛ ≤ 0.2 MeV) in Λhypernuclear reaction spectroscopy. This paper describes the characteristics of the (e, e ′ K + ) reaction compared to other reactions and experimental methods. In addition, the experimental apparatus, some of the important analyses such as the semi-automated calibration of absolute energy scale, and the performance achieved in E05-115 are presented. II. MISSING-MASS SPECTROSCOPY WITHTHE (e, e ′ K + ) REACTION Λ hypernuclei were first found in nuclear emulsions that were exposed to cosmic rays [19]. Later, the Λ binding energies B Λ , defined in Eq. (17), of A ≤ 15 hypernuclei were obtained in experiments with nuclear emulsions exposed to mesic beams such as K − [20]. A typical accuracy on the B Λ determination is approximately ∆B Λ ≤ 0.1 MeV including systematic errors. Except for a few cases, emulsion experiments were able to determine only the ground-state B Λ as they derived the B Λ by tracing weak decay processes of Λ hypernuclei which take a longer time than deexcitations emitting γ-rays and neutrons. In addition, with the emulsion technique, the complexity of decay sequences from heavier hypernuclei prevented B Λ measurements with the mass numbers larger

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High Resolution Spectroscopy of theΛ12BHypernucleus Produced by the(e,e′K+

Cited by 79 publications

References 25 publications

Hypernuclear no-core shell model

Hypernuclear no-core shell model

Enzymatic mineralization of gellan gum hydrogel for bone tissue-engineering applications and its enhancement by polydopamine

Experimental techniques and performance of Λ-hypernuclear spectroscopy with the (e,e′
Gogami
¹
,
Chen
²
,
Fujii
³

et al. 2018
Nuclear Instruments and Methods in Physics Research Section A:
Self Cite
12
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6
0
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High Resolution Spectroscopy of theΛ12BHypernucleus Produced by the(e,e′K+

Cited by 79 publications

References 25 publications

Hypernuclear no-core shell model

Hypernuclear no-core shell model

Enzymatic mineralization of gellan gum hydrogel for bone tissue-engineering applications and its enhancement by polydopamine

Experimental techniques and performance of Λ-hypernuclear spectroscopy with the (e,e′Gogami1, Chen2, Fujii3 et al. 2018Nuclear Instruments and Methods in Physics Research Section A: Self Cite12060View full textAdd to dashboardCite

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Experimental techniques and performance of Λ-hypernuclear spectroscopy with the (e,e′
Gogami
¹
,
Chen
²
,
Fujii
³

et al. 2018
Nuclear Instruments and Methods in Physics Research Section A:
Self Cite
12
0
6
0
View full text Add to dashboard Cite