4.8 Article

Isoscalar Monopole Resonance of the Alpha Particle: A Prism to Nuclear Hamiltonians

期刊

PHYSICAL REVIEW LETTERS
卷 110, 期 4, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.042503

关键词

-

资金

  1. Natural Sciences and Engineering Research Council (NSERC)
  2. National Research Council of Canada
  3. Israel Science Foundation [954/09]
  4. MIUR [PRIN-2009TWL3MX]

向作者/读者索取更多资源

We present an ab initio study of the isoscalar monopole excitations of He-4 using different realistic nuclear interactions, including modern effective field theory potentials. In particular we concentrate on the transition form factor F-M to the narrow 0(+) resonance close to threshold. F-M exhibits a strong potential model dependence, and can serve as a kind of prism to distinguish among different nuclear force models. Compared to the measurements obtained from inelastic electron scattering off He-4, one finds that the state-of-the-art theoretical transition form factors are at variance with experimental data, especially in the case of effective field theory potentials. We discuss some possible reasons for such a discrepancy, which still remains a puzzle. DOI: 10.1103/PhysRevLett.110.042503

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Astronomy & Astrophysics

The continuum spectrum of hypernuclear trios

M. Schafer, B. Bazak, N. Barnea, J. Mares

PHYSICS LETTERS B (2020)

Article Physics, Nuclear

On the width of the K-D atom ground state

N. Barnea, E. Friedman, A. Gal

Summary: Experiments at DA Phi NE-Frascati and J-PARC aim to produce K-D atoms and observe their X-ray cascade down to the 1S ground state, measuring the strong-interaction width and shift away from a purely Coulomb state. Predictions show a strong interaction upward level shift and width for the K-D atom 1S ground state, aligning with three-body K-D atom calculations and compared with pi D- atom phenomenology.

NUCLEAR PHYSICS A (2021)

Correction Physics, Multidisciplinary

Collinear configuration of the helium atom and two-electron ions (vol 422, 168306, 2020)

Evgeny Z. Liverts, Nir Barnea, Rajmund Krivec

ANNALS OF PHYSICS (2021)

Article Physics, Multidisciplinary

Implementation of Local Chiral Interactions in the Hyperspherical Harmonics Formalism

Simone Salvatore Li Muli, Sonia Bacca, Nir Barnea

Summary: By employing local chiral interactions to investigate the properties of few-body nuclear systems, researchers focus on three-body forces at next-to-next-to leading order. Through implementation and comparison studies, they discover the potential of local chiral Hamiltonians on properties of other light nuclei.

FRONTIERS IN PHYSICS (2021)

Article Astronomy & Astrophysics

Spectrum of light nuclei in a finite volume

R. Yaron, B. Bazak, M. Schafer, N. Barnea

Summary: Lattice quantum chromodynamics calculations provide a new approach for ab initio predictions in nuclear physics, by extrapolating finite-volume results to free-space physical quantities. We investigated the effect of periodic boundary conditions on the binding energy of light nuclei using the stochastic variational method, and examined the limitations of the Luscher formula for different nuclear systems.

PHYSICAL REVIEW D (2022)

Article Physics, Nuclear

In-medium ? isospin impurity from charge symmetry breaking in the 4?H-?4 He mirror hypernuclei

M. Schafer, N. Barnea, A. Gal

Summary: The study analyzes the large charge symmetry breaking (CSB) in the mirror hypernuclei and deduces an in-medium admixture amplitude A(I=1) asymptotic to 1.5% in the dominantly isospin I = 0 lambda hyperon. The research confirms previous findings regarding the lambda-sigma(0) induced in-medium admixture amplitude and explores the impact of SU(3) flavor symmetry on the lambda-nucleon interaction, highlighting the expected influences on the S = 1 and S = 0 spin channels.

PHYSICAL REVIEW C (2022)

Article Physics, Nuclear

Consequences of increased hypertriton binding for s-shell Λ-hypernuclear systems

M. Schafer, B. Bazak, N. Barnea, A. Gal, J. Mares

Summary: The consequences of increasing the binding energy of the hypertriton ground state on s-shell hypernuclei are studied within a pionless effective field theory approach, finding that the Lambda nn(1/2(+)) resonance becomes broader and the spin-flip virtual state moves closer to the Lambda d threshold. The impact on femtoscopic studies of Lambda-deuteron correlations and the potential shallow bound state are discussed in relation with experimental observances.

PHYSICAL REVIEW C (2022)

Article Physics, Nuclear

Removing center of mass effects in response function and sum rule calculations based on the harmonic oscillator basis

K. Akdogan, D. Layh, I Weinberger, J. Simonis, N. Barnea, S. Bacca

Summary: This study presents a method to correct the center of mass effects by confining the system in a harmonic oscillator. The longitudinal response function in electron scattering is specifically investigated and expressions for center of mass correction are provided. A proof of principle study on the electric dipole sum rules in a two-body problem is conducted with numerical implementation, paving the way for future application on heavier nuclei.

PHYSICAL REVIEW C (2022)

Article Physics, Nuclear

Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data

R. Weiss, A. W. Denniston, J. R. Pybus, O. Hen, E. Piasetzky, A. Schmidt, L. B. Weinstein, N. Barnea

Summary: The study shows that the extraction of the relative abundances of short-range correlated nucleon pairs using the generalized contact formalism (GCF) is sensitive to model parameters, with the light-cone GCF formulation significantly reducing this sensitivity and improving consistency with ab initio calculations. The ratio of similar mass isotopes is found to be sensitive to nuclear asymmetry dependence of SRCs and low-energy nuclear structure, suggesting the need for cross-section calculations that properly account for both nuclear structure and relativistic effects to improve accuracy.

PHYSICAL REVIEW C (2021)

Article Physics, Nuclear

Nature of the Λnn(Jπ=1/2+, I=1) and 3ΛH*(Jπ=3/2+, I=0) states

M. Schaefer, B. Bazak, N. Barnea, J. Mares

Summary: The nature of Lambda nn and H-3(Lambda)*(J(pi) = 3/2(+), I = 0) states was investigated using a pionless effective field theory at leading order. The Lambda nn and (Lambda)(3)H* states were found to be unbound, with the (Lambda)(3)H* state being a virtual state. It was also suggested that the Lambda nn pole could potentially convert to a true resonance with Re(E) > 0. The stability of resonance solutions and accuracy of calculations were discussed and assessed.

PHYSICAL REVIEW C (2021)

Article Physics, Multidisciplinary

Many-body factorization and position-momentum equivalence of nuclear short-range correlations

R. Cruz-Torres, D. Lonardoni, R. Weiss, M. Piarulli, N. Barnea, D. W. Higinbotham, E. Piasetzky, A. Schmidt, L. B. Weinstein, R. B. Wiringa, O. Hen

Summary: This study reveals a universal factorization of the many-body nuclear wave function at short distances, highlighting the embedding of short-distance correlation effects within two-body correlations. The ratio of contact coefficients between different nuclei shows little dependence on the nuclear interaction model.

NATURE PHYSICS (2021)

Proceedings Paper Quantum Science & Technology

A Statistical Analysis of the Nuclear Structure Uncertainties in μD

Oscar J. Hernandez, Sonia Bacca, Nir Barnea, Nir Nevo-Dinur, Andreas Ekstrom, Chen Ji

RECENT PROGRESS IN FEW-BODY PHYSICS (2020)

Article Physics, Multidisciplinary

Collinear configuration of the helium atom and two-electron ions

Evgeny Z. Liverts, Rajmund Krivec, Nir Barnea

ANNALS OF PHYSICS (2020)

Article Physics, Nuclear

Extrapolating lattice QCD results using effective field theory

Moti Eliyahu, Betzalel Bazak, Nir Barnea

PHYSICAL REVIEW C (2020)

Article Optics

Universal short-range correlations in bosonic helium clusters

B. Bazak, M. Valiente, N. Barnea

PHYSICAL REVIEW A (2020)

暂无数据