Gamow–Teller strength extraction from (3He, t) reactions

Frekers, D.; Puppe, P.; Thies, J. H.; Ejiri, H.

doi:10.1016/j.nuclphysa.2013.08.006

Cited by 69 publications

(68 citation statements)

References 82 publications

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“…Second, within the context of double charge exchange, both GT and pairing vibrations have to be extended to other multipolarities different from 1 + and 0 + , respectively. Last, but not least, the ground state of both 16 [23]. This is in keeping with the fact that essentially a single 1 + state (0.69 MeV) already implies closure in the present case.…”

supporting

confidence: 85%

“…New frontiers of interdisciplinarity and unification are being forced open by work on double charge-exchange (2n, 2p) and neutrinoless double beta decay (ββ(0ν)), this last constituting an important element in testing the Standard Model. Nuclear matrix elements entering the calculation of ββ(0ν) can be, in principle, extracted from the absolute value of (2n, 2p) differential cross sections [21][22][23][24][25] 38 Ar, have to be calculated, and the results compared with the experimental findings. In this way the three channels contributing to the 40 Ca → 40 Ar reaction will be properly characterized, in terms of GT wave functions for the first one, and of pairing vibrations for the last two.…”

mentioning

confidence: 99%

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Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Bortignon

Broglia

2016

Eur. Phys. J. A

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Abstract. Nuclear physics, in general, and theoretical nuclear physics, in particular, have provided the physics community at large, among other things, with the paradigm of spontaneous symmetry breaking phenomena in finite many-body systems. The study of the associated mechanisms of symmetry restoration has shed light on the microscopic structure of the corresponding condensates, in particular on the superfluid phase, allowing to study Cooper pair tunnelling into superfluid nuclei (related to the Josephson effect), in terms of individual quantum states and reaching, in doing so, a new milestone: that of unifying structure and reactions, these last processes being found at the basis of the formulation of quantum mechanics (probability interpretation, Born). In the process, nuclear physicists have extended the validity of BCS theory of superconductivity to the single Cooper pair situation, let alone discovering unexpected mechanism to break gauge invariance. The insight obtained from pair transfer research is likely to have important consequences in the study of double charge exchange processes, and thus in the determination of the nuclear matrix element associated with neutrinoless double beta decay, eventually providing an important test of the Standard Model. Time, thus, seems ripe for nuclear theorists to take centre stage, backed by a wealth of experimental information and by their interdisciplinary capacity to connect basic physical concepts across the borders. With the help of these elements they can aim at fully revealing the many facets of their femtometer many-body system, from vacuum zero point fluctuations to new exotic modes of nuclear excitations and of their interweaving, resulting in powerful effective field theories. Unless. Unless they are not able to free themselves from words like ab initio or fundamental, and to adapt a relax attitude concerning Skyrme, tensor, etc., forces, as well as regarding the quest for "the" Hamiltonian.The modern theory of nuclear structure results from the merging of the liquid drop and of the shell model, which contributed to the concepts of collective excitations and of independent-particle motion, respectively. These apparently contradictory views became eventually unified in the paradigm of broken symmetry restoration to determine the elementary modes of nuclear excitation, their interweaving being a consequence of the particle-vibration coupling mechanism [1]. The resulting clothed bosonic and fermionic degrees of freedom constitute the physical, elementary modes of nuclear excitation which diagonalize the many-body nuclear Hamiltonian restoring symmetries spontaneously broken. The associated spectroscopic amplitudes provide, together with the theory of reactions [2][3][4][5], the elements to calculate the absolute value of the differential cross sections and transition rates. In partica e-mail: Pierfrancesco.Bortignon@mi.infn.it ular, those associated with: a) inelastic scattering and Coulomb excitation, b) one-particle and, c) two-particle transfer processes. ...

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supporting

confidence: 85%

mentioning

confidence: 99%

Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Bortignon

Broglia

2016

Eur. Phys. J. A

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“…10, where they are compared with the observed GT − distributions extracted from high-resolution ( 3 He, t) reactions on 136 Xe [52].…”

Section: Bmentioning

confidence: 99%

Calculation of Gamow-Teller and two-neutrino double- β decay properties for Te130 and Xe136
Coraggio
¹
,
Angelis
²
,
Fukui
³

et al. 2017
Phys. Rev. C
43
2
58
0
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We report on the calculation of Gamow-Teller and double-β decay properties for nuclei around 132 Sn within the framework of the realistic shell model. The effective shell-model Hamiltonian and Gamow-Teller transition operator are derived by way of many-body perturbation theory, without resorting to empirical effective quenching factor for the Gamow-Teller operator. The results are then compared with the available experimental data, in order to establish the reliability of our approach. This is a mandatory step, before we apply the same methodology, in forthcoming studies, to the calculation of the neutrinoless double-β decay nuclear matrix element for nuclei that are currently considered among the best candidates for the detection of this process.

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“…The charge-exchange excitations can be explored with the charge-exchange reactions, such as (p, n) or ( 3 He, t) reactions, and the weak-decay processes, such as β decays [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Niu

Liang

et al. 2017

Phys. Rev. C

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The self-consistent quasiparticle random-phase approximation (QRPA) approach is formulated in the canonical single-nucleon basis of the relativistic Hatree-Fock-Bogoliubov (RHFB) theory.This approach is applied to study the isobaric analog states (IAS) and Gamov-Teller resonances (GTR) by taking Sn isotopes as examples. It is found that self-consistent treatment of the particleparticle residual interaction is essential to concentrate the IAS in a single peak for open-shell nuclei and the Coulomb exchange term is very important to predict the IAS energies. For the GTR, the isovector pairing can increase the calculated GTR energy, while the isoscalar pairing has an important influence on the low-lying tail of the GT transition. Furthermore, the QRPA approach is employed to predict nuclear β-decay half-lives. With an isospin-dependent pairing interaction in the isoscalar channel, the RHFB+QRPA approach almost completely reproduces the experimental β-decay half-lives for nuclei up to the Sn isotopes with half-lives smaller than one second. Large discrepancies are found for the Ni, Zn, and Ge isotopes with neutron number smaller than 50, as well as the Sn isotopes with neutron number smaller than 82. The potential reasons for these discrepancies are discussed in detail.

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Gamow–Teller strength extraction from (3He, t) reactions

Cited by 69 publications

References 82 publications

Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Calculation of Gamow-Teller and two-neutrino double- β decay properties for Te130 and Xe136
Coraggio
¹
,
Angelis
²
,
Fukui
³

et al. 2017
Phys. Rev. C
43
2
58
0
View full text Add to dashboard Cite

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

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Gamow–Teller strength extraction from (3He, t) reactions

Cited by 69 publications

References 82 publications

Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Challenges in the description of the atomic nucleus: Unification and interdisciplinarity

Calculation of Gamow-Teller and two-neutrino double- β decay properties for Te130 and Xe136Coraggio1, Angelis2, Fukui3 et al. 2017Phys. Rev. C432580View full textAdd to dashboardCite

Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations

Contact Info

Product

Resources

About

Calculation of Gamow-Teller and two-neutrino double- β decay properties for Te130 and Xe136
Coraggio
¹
,
Angelis
²
,
Fukui
³

et al. 2017
Phys. Rev. C
43
2
58
0
View full text Add to dashboard Cite