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Simultaneous Electrophysiological Recording and Calcium Imaging of Suprachiasmatic Nucleus Neurons

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Ab Initio Computation of the Longitudinal Response Function in ^{40}Ca.

J E Sobczyk¹, B Acharya¹, S Bacca^1,2

¹Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg-Universität, 55128 Mainz, Germany.

Physical Review Letters

|August 30, 2021

Summary

This summary is machine-generated.

We accurately computed the longitudinal response function in Calcium-40 using advanced ab initio methods. This research is crucial for understanding neutrino-nucleus interactions in future long-baseline neutrino experiments.

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Area of Science:

Nuclear Physics
Computational Physics

Background:

Accurate theoretical predictions of nuclear responses are vital for interpreting experimental data.
Ab initio calculations provide a fundamental approach to nuclear structure and reactions.

Purpose of the Study:

To perform a consistent ab initio computation of the longitudinal response function R_L in Calcium-40.
To validate the computational approach using light nuclei and sum rules.
To advance the prediction of neutrino-nucleus cross sections.

Main Methods:

Coupled-cluster theory
Lorentz integral transform method
Chiral nucleon-nucleon and three-nucleon interactions

Main Results:

Excellent agreement with experimental data for R_L in Calcium-40 within the quasielastic peak up to intermediate momentum transfers.
Demonstrated the critical role of final state interactions in accurately describing experimental results.
Validated the ab initio approach through comparisons with experimental data for Helium-4 and Coulomb sum rules in Calcium-40.

Conclusions:

The study establishes a reliable ab initio framework for calculating nuclear response functions.
This work represents a significant step towards precise ab initio predictions of neutrino-nucleus cross sections.
The findings are directly relevant for upcoming long-baseline neutrino oscillation experiments.