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Haesner, B.; Heeringa, W.; Klages, H. O.; Dobiasch, H.; Schmalz, Gerd; Schwarz, Philip J.; Wilczyńskí, J.; Zeitnitz, B.; Käppeler, F.

doi:10.1103/physrevc.28.995

Cited by 56 publications

(39 citation statements)

References 12 publications

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“…In order to have an idea of the error bars from individual experiments we also show data from Ref. [23] as the black squares. The dashed line shows the EFT result at LO which already gives a fair description of the resonance region but underestimates the cross section at threshold.…”

Section: Phase Shifts and Cross Sections In The Eftmentioning

confidence: 99%

Effective field theory for halo nuclei: shallow -wave states

2002

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Halo nuclei are a promising new arena for studies based on effective field theory (EFT). We develop an EFT for shallow p-wave states and discuss the application to elastic nα scattering. In contrast to the s-wave case, both the scattering length and effective range enter at leading order. We also discuss the prospects of using EFT in the description of other halos, such as the three-body halo nucleus 6 He.

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Section: Phase Shifts and Cross Sections In The Eftmentioning

confidence: 99%

Effective field theory for halo nuclei: shallow -wave states

2002

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“…They have been included in the calculation by taking data from Ref. [76]. At very low temperatures T < ∼ 1 eV energetic 3 H stopping times may become longer than the 3 H decay time.…”

Section: Non-thermal Fusion Reactionsmentioning

confidence: 99%

“…Table I, App.E.3,E.4) and nuclear spallation reactions (Rec. [74][75][76][77][78][79][80][81][82][83] Table I, App.E.5). This is because the competing processes for thermalization, magnetic moment scattering of neutrons off plasma e ± (Rec.…”

Section: Overview Of the Physics Of Bbn With Decaying Particlesmentioning

confidence: 99%

Big bang nucleosynthesis constraints on hadronically and electromagnetically decaying relic neutral particles

2006

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Big Bang nucleosynthesis in the presence of decaying relic neutral particles is examined in detail. All non-thermal processes important for the determination of light-element abundance yields of 2 H, 3 H, 3 He, 4 He, 6 Li, and 7 Li are coupled to the thermonuclear fusion reactions to obtain comparatively accurate results. Predicted light-element yields are compared to observationally inferred limits on primordial light-element abundances to infer constraints on the abundances and properties of relic decaying particles with decay times in the interval 0.01 sec < ∼ τX < ∼ 10 12 sec. Decaying particles are typically constrained at early times by 4 He or 2 H, at intermediate times by 6 Li, and at large times by the 3 He/ 2 H ratio. Constraints are shown for a large number of hadronic branching ratios and decaying particle masses and may be applied to constrain the evolution of the early Universe.

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“…3. The ENDF/B-VI polynomial fit [26] to the experimental data of [27][28][29] is also given (dash-dotted line). TABLES TABLE I.…”

Section: Discussionmentioning

confidence: 99%

Measurements of the total cross section for the scattering of polarized neutrons from polarizedHe3

et al. 1996

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Measurements of polarized neutron-polarized 3 He scattering are reported. The target consisted of cryogenically-polarized solid 3 He, thickness 0.04 atom/b and polarization ∼ 0.4. Polarized neutrons were produced via the 3 H( p, n) 3 He or 2 H( d, n) 3 He polarization-transfer reactions. The longitudinal and transverse total cross-section differences ∆σ L and ∆σ T were measured for incident neutron energies 2-8 MeV. The results are compared to phase-shift predictions based on four different analyses of n-3 He scattering. The best agreement is obtained with a recent R-matrix analysis of A = 4 scattering and reaction data, lending strong support to the 4 He level scheme obtained in that analysis. Discrepancies with other phase-shift parameterizations of n-3 He scattering exist, attributable in most instances to one or two particular partial waves.

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Measurement of theHe3andHe

Cited by 56 publications

References 12 publications

Effective field theory for halo nuclei: shallow -wave states

Effective field theory for halo nuclei: shallow -wave states

Big bang nucleosynthesis constraints on hadronically and electromagnetically decaying relic neutral particles

Measurements of the total cross section for the scattering of polarized neutrons from polarizedHe3

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