Further studies on the evidence for a 17-keV neutrino in a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">doped</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>14</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>germanium detector

Wietfeldt, F. E.; Norman, E. B.; Cruz, M. T. F. da; Garcı́a, A.; Häller, E. E.; Hansen, W. L.; Hindi, M. M.; Larimer, R. M.; Lesko, K. T.; Luke, P.N.; Stokstad, R. G.; Sur, B.; Ẑlimen, I.

doi:10.1103/physrevc.52.1028

Cited by 14 publications

(17 citation statements)

References 37 publications

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“…We have also examined the mirror decay of 14 C, whose lifetime is known [15] to be t 1/2 = 5700(30) yr. Our strategy for this decay is to adjust the wavefunction amplitude α to fit this lifetime exactly. Then the shell-model calculations give a prediction for the shape-correction function, C(Z, W ), whose slope parameter a can be compared with the experimentally determined value of Wietfeldt et al [16]. The results are listed in the bottom half of Table II.…”

Section: Calculation Of C(z W )mentioning

confidence: 98%

“…For A = 14 nuclei, we use the 0p-shell wave functions of Cohen and Kurath [9] denoted (8)(9)(10)(11)(12)(13)(14)(15)(16)POT. For comparison purposes we also consider the more recent 0p-shell part of the Warburton-Brown Hamiltonian [10] (the interaction labelled PWBT in Table X of Ref.…”

Section: Calculation Of C(z W )mentioning

confidence: 99%

“…Close to major shell closures the choice of a model space and effective interaction can be problematic if one wants to go beyond simple singlemajor-shell configurations. For example, in the A = 14 spectrum the lowest-energy states are predominantly two holes outside a closed 16 O core, |2h , but lying low in the spectrum are 'intruder' states with configurations involving four holes and two particles, |4h-2p . Mixing between these configurations must occur, and to obtain the degree of mixing with the shell model is difficult.…”

Section: Calculation Of C(z W )mentioning

confidence: 99%

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New analysis ofO14β decay: Branching ratios and conserved vector current consistency

Towner

Hardy

2005

Phys. Rev. C

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The ground-state Gamow-Teller transition in the decay of 14 O is strongly hindered and the electron spectrum shape deviates markedly from the allowed shape. A reanalysis of the only available data on this spectrum changes the branching ratio assigned to this transition by seven standard deviations: Our new result is (0.54 ± 0.02)%. The Kurie plot data from two earlier publications are also examined, and a revision to their published branching ratios is recommended. The required nuclear matrix elements are calculated with the shell model, and, for the first time, consistency is obtained between the M1 matrix element deduced from the analog γ transition in 14 N and that deduced from the slope in the shape-correction function in the β transition, a requirement of the conserved-vector current hypothesis. This consistency is obtained, however, only if renormalized rather than free-nucleon operators are used in the shell-model calculations. In the mirror decay of 14 C, a similar situation occurs. Consistency among the 14 C lifetime, the slope of the shape-correction function, and the M1 matrix element from γ decay can be achieved only with renormalized operators in the shell-model calculation.

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Section: Calculation Of C(z W )mentioning

confidence: 98%

Section: Calculation Of C(z W )mentioning

confidence: 99%

Section: Calculation Of C(z W )mentioning

confidence: 99%

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New analysis ofO14β decay: Branching ratios and conserved vector current consistency

Towner

Hardy

2005

Phys. Rev. C

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“…The use of a 14 C injection source in addition to 3 H increases the energy range of our measurements by nearly an order of magnitude. The radioactive isotope 14 C β-decays to the ground state of 14 N with a Q-value of 156 keV, which is 8.6 times greater than the 3 H Q-value of 18.1 keV [10,14,15]. The 14 C calibration was performed at the end of the LUX operational lifetime and just before decommissioning in September, 2016.…”

Section: Introductionmentioning

confidence: 99%

Improved Measurements of the \b{eta}-Decay Response of Liquid Xenon with the LUX Detector

Akerib,

Alsum,

Araújo

et al. 2019

Preprint

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“…2. By fitting this spectrum against the known 14 C spectral shape [27], we obtain a 14 C rate in Borexino of 40±1 Bq per 100 t. The error accounts for statistical and systematical uncertainties, most notably due to uncertainty in the 14 C spectral shape [27,28,29] and fit conditions. Due to its high rate, 14 C naturally generates a considerable amount of pile-up: two physical events occur so close to each other in time that the detector fails to resolve them.…”

Section: Pp Analysismentioning

confidence: 99%

Low-energy (anti)neutrino physics with Borexino: Neutrinos from the primary proton-proton fusion process in the Sun

Mosteiro

Bellini

Benziger

et al. 2015

Nuclear and Particle Physics Proceedings

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The Sun is fueled by a series of nuclear reactions that produce the energy that makes it shine. The primary reaction is the fusion of two protons into a deuteron, a positron and a neutrino. These neutrinos constitute the vast majority of neutrinos reaching Earth, providing us with key information about what goes on at the core of our star. Several experiments have now confirmed the observation of neutrino oscillations by detecting neutrinos from secondary nuclear processes in the Sun; this is the first direct spectral measurement of the neutrinos from the keystone proton-proton fusion. This observation is a crucial step towards the completion of the spectroscopy of pp-chain neutrinos, as well as further validation of the LMA-MSW model of neutrino oscillations

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Further studies on the evidence for a 17-keV neutrino in adoped14germanium detector

Cited by 14 publications

References 37 publications

New analysis ofO14β decay: Branching ratios and conserved vector current consistency

New analysis ofO14β decay: Branching ratios and conserved vector current consistency

Improved Measurements of the \b{eta}-Decay Response of Liquid Xenon with the LUX Detector

Low-energy (anti)neutrino physics with Borexino: Neutrinos from the primary proton-proton fusion process in the Sun

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