Elsevier

Physics Letters B

Volume 795, 10 August 2019, Pages 200-205
Physics Letters B

Is the unusual near-threshold potential behavior in elastic scattering of weakly-bound nuclei a precision error?

https://doi.org/10.1016/j.physletb.2019.06.005Get rights and content
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Abstract

We present the first example of a rigorous uncertainty quantification on elastic nucleus-nucleus scattering at energies near the Coulomb barrier. Experimental data has been analyzed using an energy-dependent effective optical model potential with physical constraints imposed. We confirm the compatibility of these uncertainties with the well known Coulomb threshold anomaly, explained in terms of a dispersive relation, and contrast our results with previous analyses that suggest otherwise.

Keywords

Nuclear reaction
Dispersive relation
Optical potential
Uncertainty quantification
Coulomb threshold anomaly
Statistical analysis

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