Spin-dipole strength functions of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>4</mml:mn></mml:msup></mml:math>He with realistic nuclear forces

Horiuchi, W.; Suzuki, Y.

doi:10.1103/physrevc.87.034001

Cited by 29 publications

(29 citation statements)

References 55 publications

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“…As a "mini" version of 16 O, the spectrum of 4 He has some similarity to that of 16 O. Because of the spin-isospin coupling of 3N + N clusters, seven negative-parity states appear in 4 He above the first-excited 0 + 0 state, as shown in calculations with the AV8 + 3NF potential [28]. Figure 7 plots the P Q values of the 0 − 0 (21.01 MeV) and 2 − 0 (21.84 MeV) states that are identified as the parityinverted partners [16].…”

Section: Inversion Doublets In 4 Hementioning

confidence: 85%

Harmonic-oscillator excitations of precise few-body wave functions

Horiuchi

Suzuki

2014

Phys. Rev. C

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A method for calculating the occupation probability of the number of harmonic-oscillator (HO) quanta is developed for a precise few-body wave function obtained in a correlated Gaussian basis. The probability distributions of two-to four-nucleon wave functions obtained by using different nucleon-nucleon (NN) interactions are analyzed to gain insight into the characteristic behavior of the various interactions. Tensor correlations as well as short-range correlations play a crucial role in enhancing the probability of high HO excitations. For the excited states of 4 He, the interaction dependence is much less because high HO quanta are mainly responsible for describing the relative-motion function between the 3N + N ( 3 H + p and 3 He + n) clusters.

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Section: Inversion Doublets In 4 Hementioning

confidence: 85%

Harmonic-oscillator excitations of precise few-body wave functions

Horiuchi

Suzuki

2014

Phys. Rev. C

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“…to the tensor force [115]. We can also estimate the decay width of the resonance by taking the difference of two excitation energies at which the strength becomes half of the maximum strength at the peak.…”

Section: 24mentioning

confidence: 99%

Towards a unified model of neutrino-nucleus reactions for neutrino oscillation experiments

et al. 2017

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A precise description of neutrino-nucleus reactions will play a key role in addressing fundamental questions such as the leptonic CP violation and the neutrino mass hierarchy through analyzing data from next-generation neutrino oscillation experiments. The neutrino energy relevant to the neutrino-nucleus reactions spans a broad range and, accordingly, the dominant reaction mechanism varies across the energy region from quasi-elastic scattering through nucleon resonance excitations to deep inelastic scattering. This corresponds to transitions of the effective degree of freedom for theoretical description from nucleons through meson-baryon to quarks. The main purpose of this review is to report our recent efforts towards a unified description of the neutrino-nucleus reactions over the wide energy range; recent overall progress in the field is also sketched. Starting with an overview of the current status of neutrino-nucleus scattering experiments, we formulate the cross section to be commonly used for the reactions over all the energy regions. A description of the neutrino-nucleon reactions follows and, in particular, a dynamical coupled-channels model for meson productions in and beyond the [Formula: see text](1232) region is discussed in detail. We then discuss the neutrino-nucleus reactions, putting emphasis on our theoretical approaches. We start the discussion with electroweak processes in few-nucleon systems studied with the correlated Gaussian method. Then we describe quasi-elastic scattering with nuclear spectral functions, and meson productions with a [Formula: see text]-hole model. Nuclear modifications of the parton distribution functions determined through a global analysis are also discussed. Finally, we discuss issues to be addressed for future developments.

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“…We apply the same prescription as that of Refs. [39,40] adopted for the study of E1 and spin-dipole strength in N = 4 system to the six-body calculation of E1 strength. In that study four-body continuum-discretized states are constructed by taking into account both sum rules and final state interactions, and thereby the model reproduces experimental data satisfactorily and in addition leads to some predictions.…”

Section: Basis Functions For Electric Dipole Excitationmentioning

confidence: 99%

Electric dipole response ofHe6: Halo-neutron and core excitations

2014

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Electric dipole (E1) response of 6 He is studied with a fully microscopic six-body calculation. The wave functions for the ground and excited states are expressed as a superposition of explicitly correlated Gaussians. Final state interactions of three-body decay channels are explicitly taken into account. The ground state properties and the low-energy E1 strength are obtained consistently with observations. Two main peaks as well as several small peaks are found in the E1 strength function. The peak at the high-energy region indicates a typical macroscopic picture of the giant dipole resonance, the out-of-phase proton-neutron motion. The transition densities of the lower-lying peaks exhibit in-phase proton-neutron motion in the internal region, out-of-phase motion near the surface region, and spatially extended neutron oscillation, indicating a soft-dipole mode and its vibrationally excited mode. The compressional dipole strength is also examined in relation to the soft-dipole mode.

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Spin-dipole strength functions of4He with realistic nuclear forces

Cited by 29 publications

References 55 publications

Harmonic-oscillator excitations of precise few-body wave functions

Harmonic-oscillator excitations of precise few-body wave functions

Towards a unified model of neutrino-nucleus reactions for neutrino oscillation experiments

Electric dipole response ofHe6: Halo-neutron and core excitations

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