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DOE OSTI · 1817486

Ab Initio Computation of the Longitudinal Response Function in 40 Ca

Sobczyk, J. E.·Acharya, B.·Bacca, S.·Hagen, G.
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Abstract

In this work, we present a consistent ab initio computation of the longitudinal response function RL in 40 Ca using the coupled-cluster and Lorentz integral transform methods starting from chiral nucleon-nucleon and three-nucleon interactions. We validate our approach by comparing our results for R L in 4 He and the Coulomb sum rule in 40 Ca against experimental data and other calculations. For R L in 40 Ca we obtain a very good agreement with experiment in the quasielastic peak up to intermediate momentum transfers, and we find that final state interactions are essential for an accurate description of the data. This work presents a milestone towards ab initio computations of neutrino-nucleus cross sections relevant for experimental long-baseline neutrino programs.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSab initio calculationselectronselectroweak interactions in nuclear physicsneutrinosnuclear many-body theory

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Sobczyk, J. E., Acharya, B., Bacca, S., Hagen, G.. 2021-08-09. Ab Initio Computation of the Longitudinal Response Function in 40 Ca. https://doi.org/10.1103/physrevlett.127.072501

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