6533b856fe1ef96bd12b1e81
RESEARCH PRODUCT
Spectral shapes of forbidden argonβdecays as background component for rare-event searches
Kai ZuberJoel KostensaloJouni Suhonensubject
PhysicsNuclear and High Energy PhysicsArgonNuclear Theory010308 nuclear & particles physicsEvent (relativity)Dark matterSHELL modelFOS: Physical scienceschemistry.chemical_elementAstrophysics01 natural sciencesNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)chemistryComponent (UML)0103 physical sciencesNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear theorydescription
The spectral shape of the electrons from the two first-forbidden unique beta- decays of Ar-39 and Ar-42 were calculated for the first time to the next-to-leading order. Especially the spectral shape of the Ar-39 decay can be used to characterise this background component for dark matter searches based on argon. Alternatively, due to the low thresholds of these experiments, the spectral shape can be investigated over a wide energy range with high statistics and thus allow a sensitive comparison with the theoretical predictions. This might lead to interesting results for the ratio of the weak vector and axial-vector constants in nuclei.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-16 | Journal of Physics G: Nuclear and Particle Physics |