Electric quadrupole moment of the proton halo nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>8</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

Sumikama, T.; Nakamura, Takashi; Ogura, M.; Iwakoshi, T.; Nakashima, Y.; Fujiwara, H.; Matsuta, K.; Minamisono, T.; Fukuda, M.; Mihara, M.

doi:10.1103/physrevc.74.024327

Cited by 28 publications

(21 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…EFG at implantation sites in crystals has been studied by the β-NMR technique [14][15][16]. [14,16] were parallel to the c axis of the crystals, i.e., θ = 0, thus giving four frequencies split at regular intervals.…”

Section: Spin Manipulationmentioning

confidence: 99%

Test of the conserved vector current hypothesis by aβ-ray angular distribution measurement in the mass-8 system

et al. 2011

Self Cite

View full text Add to dashboard Cite

The β-ray angular correlations for the spin alignments of 8 Li and 8 B have been observed in order to test the conserved vector current (CVC) hypothesis. The alignment correlation terms were combined with the known β-α-angular correlation terms to determine all the matrix elements contributing to the correlation terms. The weak magnetism term, 7.5±0.2, deduced from the β-ray correlation terms was consistent with the CVC prediction 7.3±0.2, deduced from the analog-γ-decay measurement based on the CVC hypothesis. However, there was no consistent CVC prediction for the second-forbidden term associated with the weak vector current. The experimental value for the second-forbidden term was 1.0 ± 0.3, while the CVC prediction was 0.1 ± 0.4 or 2.1 ± 0.5.

show abstract

Section: Spin Manipulationmentioning

confidence: 99%

Test of the conserved vector current hypothesis by aβ-ray angular distribution measurement in the mass-8 system

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…The enhanced reaction cross section extracted by angular distribution measurements at intermediate energies [14,15,16] and the large proton-removal cross section at relativistic and intermediate energies with targets ranging from carbon to lead nuclei [14,17,18] support a halo structure of 8 B. A radius of the matter density of 2.7 fm, i.e., much larger than the prediction of any self-consistent calculation is shown to explain the experimental quadrupole moment of 8 B [19,20].…”

Section: Introductionmentioning

confidence: 99%

Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

et al. 2017

View full text Add to dashboard Cite

Abstract. The structure of the exotic 8 B nucleus is studied by means of elastic scattering, as well as its breakup on nuclear targets. We present microscopic calculations of the optical potentials (OPs) and cross sections of elastic scattering of 8 B on 12 C, 58 Ni, and 208 Pb targets at energies 20 < E < 170 MeV. The density distributions of 8 B obtained within the variational Monte Carlo (VMC) model and the three-cluster model (3CM) are used to construct the potentials. The real part of the hybrid OP is calculated using the folding model with the direct and exchange terms included, while the imaginary part is obtained on the base of the high-energy approximation (HEA) and also taken to be equal to the microscopic real part of the OP. In this model the only free parameters are the depths of the real and imaginary parts of OP obtained by fitting the elastic scattering experimental data. It is found a dependence of their values on the model density of 8 B. In addition, cluster model, in which 8

show abstract

“…Direct computation reveals the deviation of g V from unity to be smaller still [66]. Decay correlation measurements invariably conflate tests of the CVC prediction for the weak magnetism form factor [67] with those which would limit second-class currents; currently the CVC value of f 2 is tested to the level of some 6% [12,68] at 68% CL. We note, however, there has not, to date, been a published measurement of f 2 in neutron β decay, such as, e.g., could be extracted from the linear energy dependence of a, or A if g 2 = 0 is assumed.…”

Section: Survey Of Theoretical Uncertaintiesmentioning

confidence: 99%

Framework for maximum likelihood analysis of neutronβdecay observables to resolve the limits of theV−Alaw

Gardner

Plaster

2013

Phys. Rev. C

View full text Add to dashboard Cite

We assess the ability of future neutron β decay measurements of up to O(10 −4 ) precision to falsify the standard model, particularly the V − A law, and to identify the dynamics beyond it. To do this, we employ a maximum likelihood statistical framework which incorporates both experimental and theoretical uncertainties. Using illustrative combined global fits to Monte Carlo pseudodata, we also quantify the importance of experimental measurements of the energy dependence of the angular correlation coefficients as input to such efforts, and we determine the precision to which ill-known "second-class" hadronic matrix elements must be determined in order to exact such tests.

show abstract

Electric quadrupole moment of the proton halo nucleusB8

Cited by 28 publications

References 35 publications

Test of the conserved vector current hypothesis by aβ-ray angular distribution measurement in the mass-8 system

Test of the conserved vector current hypothesis by aβ-ray angular distribution measurement in the mass-8 system

Probing the exotic structure of 8B by its elastic scattering and breakup reaction on nuclear targets

Framework for maximum likelihood analysis of neutronβdecay observables to resolve the limits of theV−Alaw

Contact Info

Product

Resources

About