On the binding energy values and excited states of some hypernuclei

Cantwell, T.; Davis, D. H.; Kiełczewska, D.; Zakrzewski, J.; Jurić, M.; Krecker, U.; Coremans-Bertrand, G.; Sacton, J.; Tymieniecka, T.; Montwill, A.; Moriarty, Philip

doi:10.1016/0375-9474(74)90266-8

Cited by 51 publications

(16 citation statements)

References 13 publications

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“…II B and II C. Consider the hypernuclear potentials of Eqs. (7), (10), (11)- (13) and (17), and assume the notations…”

Section: B Auxiliary Field Dmc Methods For Hypernucleimentioning

confidence: 99%

“…Besides the very old emulsion data [12,13], several measurements of hypernuclear energies have become available in the last few years [14][15][16][17][18][19][20][21][22][23][24], both for single and double Λ hypernuclei. These can be used to validate or to constrain the hyperon-nucleon interactions within the framework of many-body systems.…”

Section: Introductionmentioning

confidence: 99%

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Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

2014

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Background: An accurate assessment of the hyperon-nucleon interaction is of great interest in view of recent observations of very massive neutron stars. The challenge is to build a realistic interaction that can be used over a wide range of masses and in infinite matter starting from the available experimental data on the binding energy of light hypernuclei. To this end, accurate calculations of the hyperon binding energy in a hypernucleus are necessary.Purpose: We present a quantum Monte Carlo study of Λ and ΛΛ hypernuclei up to A = 91. We investigate the contribution of two-and three-body Λ-nucleon forces to the Λ binding energy.Method: Ground state energies are computed solving the Schrödinger equation for non-relativistic baryons by means of the auxiliary field diffusion Monte Carlo algorithm extended to the hypernuclear sector. Results:We show that a simple adjustment of the parameters of the ΛN N three-body force yields a very good agreement with available experimental data over a wide range of hypernuclear masses. In some cases no experiments have been performed yet, and we give new predictions.Conclusions: The newly fitted ΛN N force properly describes the physics of medium-heavy Λ hypernuclei, correctly reproducing the saturation property of the hyperon separation energy.

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“…II B and II C. Consider the hypernuclear potentials of Eqs. (7), (10), (11)- (13) and (17), and assume the notations…”

Section: B Auxiliary Field Dmc Methods For Hypernucleimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

2014

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“…Λ Be was a weighted-mean value of only three events measured in the emulsion experiment [24,25] though the binding energy of 10 Λ B was determined by higher statistic (nevertheless there are only ten events). Thus, the binding energy measurement of 10 Λ Be with a higher statistic and a smaller systematic error has been awaited and is necessary, using an independent way from the emulsion study.…”

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confidence: 99%

High resolution spectroscopic study ofBeΛ10

Gogami¹,

Chen²,

Kawama³

et al. 2016

Phys. Rev. C

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A spectroscopy of a 10 Λ Be hypernucleus was carried out at JLab Hall C using the (e, e ′ K + ) reaction. A new magnetic spectrometer system (SPL+HES+HKS), specifically designed for high resolution hypernuclear spectroscopy, was used to obtain an energy spectrum with a resolution of ∼ 0.78 MeV (FWHM). The well-calibrated spectrometer system of the present experiment using p(e, e ′ K + )Λ,Σ 0 reactions allowed us to determine the energy levels, and the binding energy of the ground state peak (mixture of 1 − and 2 − states) was obtained to be B Λ = 8.55 ± 0.07(stat.) ± 0.11(sys.) MeV. The result indicates that the ground state energy is shallower than that of an emulsion study by about 0.5 MeV which provides valuable experimental information on Charge Symmetry Breaking (CSB) effect in the ΛN interaction.

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“…Hypernuclei have a lifetime of about 10 −10 s which makes it particularly difficult to investigate heavy ones. In the seventies, hypernuclei with up to A=15 have been produced [12] and some years later even heavier hypernuclei could be observed at CERN [9,10,[4][5][6] and AGS [8,13,28,14] where also exited states have been investigated.…”

Section: G Hypernucleimentioning

confidence: 99%