High-Resolution Spectroscopy of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="bold">N</mml:mi><mml:mprescripts /><mml:mi>Λ</mml:mi><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math>by Electroproduction

Cusanno, F.; Urciuoli, G. M.; Acha, A.; Ambrozewicz, P.; Aniol, K.; Baturin, P.; Bertin, P.Y.; Benaoum, H.; Blomqvist, K. I.; Boeglin, W.; Breuer, H.; Brindza, P.; Bydžovský, P.; Camsonne, A.; Cc, Chang; Chen, J. P.; Choi, S.; Chudakov, E.; Cisbani, E.; Colilli, S.; Coman, L.; Craver, B.; Cataldo, G. de; Jager, C. W. de; Лео, Р. Де; Deur, A.; Ferdi, C.; Feuerbach, R. J.; Folts, E.; Fratoni, R.; Frullani, S.; Garibaldi, F.; Gayou, O.; Giuliani, F.; Gómez, J.; Gricia, M.; Hansen, J.‐O.; Hayes, D.; Higinbotham, D. W.; Holmstrom, T.; Hyde‐Wright, C. E.; Ibrahim, H.; Iodice, M.; Jiang, X.; Kaufman, L. J.; Kino, K.; Kross, B.; Lagamba, L.; LeRose, J.; Lindgren, R.; Lucentini, M.; Margaziotis, D. J.; Markowitz, P.; Marrone, S.; Meziani, Z. E.; McCormick, K.; Michaels, R.; Millener, D.J.; Miyoshi, T.; Moffit, B.; Monaghan, Peter; Moteabbed, M.; Camacho, C. Muñoz; Nanda, S.; Nappi, E.; Nelyubin, V.; Norum, B.; Okasyasu, Y.; Paschke, K.; Perdrisat, C. F.; Piasetzky, E.; Punjabi, V.; Qiang, Y.; Raue, Brian; Reimer, P. E.; Reinhold, J.; Reitz, B.; Roché, R.; Rodriguez, V. M.; Saha, A.; Santavenere, F.; Sarty, A. J.; Segal, J.; Shahinyan, A.; Singh, J.; Širca, S.; Snyder, R.; Solvignon, P.; Sotona, M.; Subedi, R.; Sulkosky, V.; Suzuki, Toshinori; Ueno, Hiroaki; Ulmer, P. E.; Veneroni, P.; Voutier, E.; Wojtsekhowski, B.; Zheng, X.; Zorn, C.

doi:10.1103/physrevlett.103.202501

Cited by 62 publications

(40 citation statements)

References 27 publications

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“…Energy differences show better convergence. The excited state in the 5 He spectrum (Fig. 7) is a broad resonance that is hard to describe in a HO basis and, thus, converges slowly.…”

Section: Helium Hypernucleimentioning

confidence: 99%

“…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.…”

mentioning

confidence: 99%

“…(Color online) Absolute and excitation energies of low-lying states in (a)5 He and (b) its daughter hypernucleus6 Λ He. Parameters are the same as inFig.…”

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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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“…Energy differences show better convergence. The excited state in the 5 He spectrum (Fig. 7) is a broad resonance that is hard to describe in a HO basis and, thus, converges slowly.…”

Section: Helium Hypernucleimentioning

confidence: 99%

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confidence: 99%

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Hypernuclear no-core shell model

et al. 2018

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“…We refer also to the discussion in Ref. [26]. Figure 1 illustrates the contrasting results of those references.…”

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confidence: 93%

Skyrme force for light and heavy hypernuclei

Schulze

Hiyama

2014

Phys. Rev. C

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We present a lambda-nucleon Skyrme force suitable for reproducing the observed binding energies of the whole range of known light and heavy single-lambda hypernuclei with A = 5, . . . ,208. Notable exceptions such as 9 Be, featuring a well-developed cluster structure, are identified and examined in comparison with a cluster approach for the hypernuclear structure. Proton Accelerator Research Complex, etc. are becoming available, allowing a more detailed study of single-and doublehypernuclei than has been possible so far [1,2]. This also requires continuing development of the theoretical tools to model and predict hypernuclear structure. The Skyrme-Hartree-Fock (SHF) approach is an efficient theoretical method that has been used with great success for ordinary nuclear structure calculations and predictions [3,4]. It has also been extended to the nucleon-hyperon sector for the description of single-and double-hypernuclei and several sets of N Skyrme forces have been constructed [5][6][7][8][9][10][11]. However, all these forces are so far focused on the range of medium and heavy hypernuclei.On the other hand, recently few-body calculation methods such as the Gaussian expansion method have been developed for light s-shell and p-shell hypernuclei with A = 3 to 10, which allows us to extract new features such as the shrinkage effect, energy stabilization, etc. [12].The SHF mean-field approach is of course not very suitable for modeling light (hyper)nuclei due to the importance of cluster and other finite-size effects in these small systems. However, as long as one is only interested in the separation energy,

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Strangeness physics at JLab

Nakamura

2012

Exa 2011

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High-Resolution Spectroscopy ofNΛ16by Electroproduction

Cited by 62 publications

References 27 publications

Hypernuclear no-core shell model

Hypernuclear no-core shell model

Skyrme force for light and heavy hypernuclei

Strangeness physics at JLab

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