High-precision 
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-value measurement of the superallowed 
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 emitter 
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 and an 
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Reiter, M. P.; Leach, K. G.; Drozdowski, Oliver M.; Stroberg, S. R.; Holt, J. D.; Andreoiu, C.; Babcock, C.; Barquest, B. R.; Brodeur, M.; Finlay, A.; Foster, Martha A.; Gallant, A. T.; Gwinner, G.; Klawitter, R.; Kootte, B.; Kwiatkowski, A. A.; Lan, Y.; Lascar, D.; Leistenschneider, E.; Lennarz, A.; Paul, S. F.; Steinbrügge, René; Thompson, R. I.; Wieser, Michael E.; Dilling, J.

doi:10.1103/physrevc.96.052501

Cited by 11 publications
(27 citation statements)

References 58 publications
(77 reference statements)

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“…The experimental spectroscopic results were also compared to abinitio shell-model calculations using χ-EFT with the VS-IMSRG method in the mid pf -shell for the first time, and show good agreement in the level orderings and density, albeit with slightly higher calculated energies for yrast states. This characteristic of overbinding in the calculations is consistent with previous studies which demonstrate ∼ MeV-scale differences in the calculated atomic masses relative to experiment [44][45][46][47]50].…”

Section: Discussionsupporting
confidence: 91%

“…50 Cr 1 − States -Only one 1 − state was assigned in the work presented here, with an excitation energy in 50 Cr of 4130.5(4) keV. This assignment removes the uncertainty in the quoted spin/parity listed in the evaluated data [28] of (1, 2 + ) based on 50 (5) keV confirm previous assignments in the evaluated data. A previously observed state at 3697.9(6) keV was given possible spin assignments of 1 + , 2 + , 3 + from 50 Cr(p,p') measurements, but has been evaluated to an assignment of 1 + .…”

Section: Experimental Assignmentssupporting
confidence: 75%

“…Here both the first 2 + state and the grouping of higher-energy states are an MeV or more too high in energy. Nonetheless, the density of states in this case is more reasonable compared to experiment than in 50 Cr.…”

Section: B Comparison To Experimental Datamentioning
confidence: 72%

See 2 more Smart Citations
High-resolution ( p,t ) reaction measurements as spectroscopic tests of ab-initio theory in the mid- pf shell
Leach
¹
,
Holt
²
,
Garrett
³

et al. 2019
Phys. Rev. C
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Detailed spectroscopic measurements of excited states in 50 Cr and 62 Zn were performed using 24 MeV (p,t) transfer reactions on 52 Cr and 64 Zn, respectively. In total, forty-five states in 50 Cr and sixty-seven states in 62 Zn were observed up to excitation energies of 5.5 MeV, including several previously unobserved states. These experimental results are compared to ab-initio shell-model calculations using chiral effective field theory (χ-EFT) with the valence-space in-medium similarity renormalization group (VS-IMSRG) method. This comparison demonstrates good agreement in the level orderings with these new theoretical methods, albeit with a slight over binding in the calculations. This work is part of a continued push to benchmark ab-initio theoretical techniques to nuclear structure data in 0 + → 0 + superallowed Fermi β decay systems.
show abstract

Section: Discussionsupporting
confidence: 91%

Section: Experimental Assignmentssupporting
confidence: 75%

See 1 more Smart Citation
High-resolution ( p,t ) reaction measurements as spectroscopic tests of ab-initio theory in the mid- pf shell
Leach
¹
,
Holt
²
,
Garrett
³

et al. 2019
Phys. Rev. C
Self Cite
1
0
0
0
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Detailed spectroscopic measurements of excited states in 50 Cr and 62 Zn were performed using 24 MeV (p,t) transfer reactions on 52 Cr and 64 Zn, respectively. In total, forty-five states in 50 Cr and sixty-seven states in 62 Zn were observed up to excitation energies of 5.5 MeV, including several previously unobserved states. These experimental results are compared to ab-initio shell-model calculations using chiral effective field theory (χ-EFT) with the valence-space in-medium similarity renormalization group (VS-IMSRG) method. This comparison demonstrates good agreement in the level orderings with these new theoretical methods, albeit with a slight over binding in the calculations. This work is part of a continued push to benchmark ab-initio theoretical techniques to nuclear structure data in 0 + → 0 + superallowed Fermi β decay systems.
show abstract

“…IMSRG and CCEI/SMCC emerged (139,140,142,143,179). The VS-IMSRG, in particular, has been widely used to compute ground and excited-state energies (129,142,143,(225)(226)(227)(228)(229)(230)(231)(232)(233)(234)(235)(236)(237)(238), although theoretical uncertainties stemming from the method still prove challenging (see Sec. 6).…”

Section: Ground and Excited States Of Sd−shell Nucleimentioning
confidence: 99%

Nonempirical Interactions for the Nuclear Shell Model: An Update
Stroberg
¹
,
Bogner
²
,
Hergert
³

et al. 2019
Annu. Rev. Nucl. Part. Sci.
197
7
216
1
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The nuclear shell model has been perhaps the most important conceptual and computational paradigm for the understanding of the structure of atomic nuclei. While the shell model has been predominantly used in a phenomenological context, there have been efforts stretching back over a half century to derive shell model parameters based on a realistic interaction between nucleons. More recently, several ab initio many-body methods-in particular many-body perturbation theory, the no-core shell model, the in-medium similarity renormalization group, and coupled cluster theory-have developed the capability to provide effective shell model Hamiltonians. We provide an update on

show abstract

“…To date, TITAN has performed high-precision direct Q EC -value measurements on the T = 1 superallowed nuclei 10 C [30], 22 Mg [31], and 74 Rb [32].…”

Section: Direct Q Ec -Value Measurements Using the Titan Penning Trapmentioning
confidence: 99%

Weak-Interaction Tests via Precision Superallowed $β$-Decay Studies at TRIUMF
Leach,
Holt
2018
Preprint
0
0
0
0
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Superallowed β-decay studies provide some of the best constraints on the possibility of additional quark generations, as well as limits on exotic currents in the weak interaction. The three experimental quantities that are required for performing these tests using 0 + → 0 + nuclear decays (branching ratio, half-life, and Q-value) can all be measured to high-precision with rare-isotope beams at the TRIUMF-ISAC facility in Vancouver, Canada. This proceeding presents a brief outline of the general experimental techniques used at TRIUMF over the past 15 years, as well as recent theoretical advances towards ab-initio isospin-symmetrybreaking corrections to superallowed nuclear decays.

show abstract

High-precision QEC -value measurement of the superallowed β+ emitter Mg22 and an ab

Abstract: High-precision Q EC -value measurement of the superallowed β + emitter 22 Mg and an ab-initio evaluation of the A = 22 isobaric triplet

Cited by 11 publications

References 58 publications

High-resolution ( p,t ) reaction measurements as spectroscopic tests of ab-initio theory in the mid- pf shell

High-resolution ( p,t ) reaction measurements as spectroscopic tests of ab-initio theory in the mid- pf shell

Nonempirical Interactions for the Nuclear Shell Model: An Update

Weak-Interaction Tests via Precision Superallowed $β$-Decay Studies at TRIUMF

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