Structure and decay of the extremely proton-rich nuclei 
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Wang, S. M.; Nazarewicz, W.; Charity, R. J.; Sobotka, L. G.

doi:10.1103/physrevc.99.054302

Cited by 31 publications

(66 citation statements)

References 79 publications

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“…Common to all these approaches is that a configuration space interaction that is given in terms of SHO matrix elements is expanded on a basis containing SHO and Berggren states, hence it is still an open question how a direct implementation of the interactions in a basis with continuum degrees of freedom might modify existing results. It is worth noting that such a construction has been achieved for phenomenological GSM interactions that have been tuned for light nuclei [217][218][219][220][221][222]. In light nuclei, the NCSMC has been applied with impressive success to describe a variety of exotic nuclei with up to three-cluster structures.…”

Section: Toward the Drip Linesmentioning

confidence: 99%

“…Methods that are similar in spirit to these combinations of structure approaches with the RGM are the APM, which can provide an interface between structure and scattering in Lattice EFT (cf. sections 2.3.8 and 3.2.4), as well as the GSM Coupled Channel (GSM-CC) approach, which was developed to describe reactions between light projectiles and targets that are treated in the GSM with a core [221,328,329]. Thus far, applications of the GSM-CC have been based on phenomenological valence-space interactions, but new efforts are underway to directly construct suitable Hamiltonians based on EFT principles [220,330], or derive the effective interactions from chiral forces with the techniques discussed in section 2.3 (see [214,215]).…”

Section: Interfacing With Reaction Theorymentioning

confidence: 99%

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A Guided Tour of ab initio Nuclear Many-Body Theory

2020

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Over the last decade, new developments in Similarity Renormalization Group techniques and nuclear many-body methods have dramatically increased the capabilities of ab initio nuclear structure and reaction theory. Ground and excited-state properties can be computed up to the tin region, and from the proton to the presumptive neutron drip lines, providing unprecedented opportunities to confront two-plus three-nucleon interactions from chiral Effective Field Theory with experimental data. In this contribution, I will give a broad survey of the current status of nuclear many-body approaches, and I will use selected results to discuss both achievements and open issues that need to be addressed in the coming decade.

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Section: Toward the Drip Linesmentioning

confidence: 99%

Section: Interfacing With Reaction Theorymentioning

confidence: 99%

A Guided Tour of ab initio Nuclear Many-Body Theory

2020

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“…We find that extrapolations for proton drip-line locations are fairly consistent across the mass models used, in spite of significant variations between their raw predictions. In this respect, this study should be considered as an extension of the previous work [42,43], in which the most promising candidates arXiv:1910.12624v1 [nucl-th] 28 Oct 2019 for 2p emitters were identified by considering several mass models. Here, we limit our investigations to nuclei with Z ≤ 82 as it is predicted [42,43] that above lead the α-decay mode dominates and no measurable candidates for 2p emission are expected.…”

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confidence: 96%

Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei

et al. 2020

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Background: The limits of the nuclear landscape are determined by nuclear binding energies. Beyond the proton drip lines, where the separation energy becomes negative, there is not enough binding energy to prevent protons from escaping the nucleus. Predicting properties of unstable nuclear states in the vast territory of proton emitters poses an appreciable challenge for nuclear theory as it often involves far extrapolations. In addition, significant discrepancies between nuclear models in the proton-rich territory call for quantified predictions.Purpose: With the help of Bayesian methodology, we mix a family of nuclear mass models corrected with statistical emulators trained on the experimental mass measurements, in the proton-rich region of the nuclear chart.Methods: Separation energies were computed within nuclear density functional theory using several Skyrme and Gogny energy density functionals. We also considered mass predictions based on two models used in astrophysical studies. Quantified predictions were obtained for each model using Bayesian Gaussian processes trained on separation-energy residuals and combined via Bayesian model averaging. Results:We obtained a good agreement between averaged predictions of statistically corrected models and experiment. In particular, we quantified model results for one-and two-proton separation energies and derived probabilities of proton emission. This information enabled us to produce a quantified landscape of proton-rich nuclei. The most promising candidates for two-proton decay studies have been identified. Conclusions:The methodology used in this work has broad applications to model-based extrapolations of various nuclear observables. It also provides a reliable uncertainty quantification of theoretical predictions.

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“…[26,27]. In the original GI model, the coupled channel or screening effects are ignored, which may influence on the properties of the excited mesons and tetraquarks [33,37,[52][53][54][55]. The modified procedure br → b(1 − e −µr )/µ with a new screening parameter µ performs a better description of meson and tetraquark spectra, especially for the strange quark systems [33,37].…”

Section: Mass Spectrummentioning

confidence: 99%

The tetraquark states and the structure of X(2239) observed by the BESIII collaboration *

2020

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We investigate the mass spectrum of the ssss tetraquark states within the relativized quark model. By solving the Schrödinger-like equation with the relativized potential, the masses of the S− and P −wave ssss tetraquarks are obtained. The screening effects are also taken into account. It is found that the observed resonant structure X(2239) in the e + e − → K + K − process by BESIII Collaboration can be assigned as a P −wave 1 −− ssss tetraquark state. Furthermore, the radiative transition and strong decay behaviors of this structure are also estimated, which can provide helpful information for future experimental searches.

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Structure and decay of the extremely proton-rich nuclei O11,12

Cited by 31 publications

References 79 publications

A Guided Tour of ab initio Nuclear Many-Body Theory

A Guided Tour of ab initio Nuclear Many-Body Theory

Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei

The tetraquark states and the structure of X(2239) observed by the BESIII collaboration *

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