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Neutral weak current two-body contributions in inclusive scattering from 12C
A Lovato1, S Gandolfi2, J Carlson2
1Argonne Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, USA and Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
This study calculates neutral weak response functions in carbon-12 using realistic nuclear interactions. Two-body interactions significantly contribute to the calculated strength, impacting interpretations of neutrino scattering experiments.
Area of Science:
- Nuclear Physics
- Particle Physics
Background:
- Understanding neutral weak interactions is crucial for nuclear structure and particle physics.
- Previous calculations often simplified nuclear potentials and currents.
Purpose of the Study:
- To perform ab initio calculations of neutral weak response functions in carbon-12.
- To investigate the role of two- and three-nucleon potentials and one- and two-body currents.
Main Methods:
- Ab initio calculation framework.
- Realistic nuclear Hamiltonian including two- and three-nucleon potentials.
- Realistic one- and two-body currents.
Main Results:
- Sum rules for longitudinal and transverse neutral weak response functions in carbon-12 were calculated.
- Two-body terms contribute significantly (approximately 30%) to the total calculated strength.
- Longitudinal and transverse components show the largest sum rules.
Conclusions:
- Two-body effects are essential for accurately describing neutral weak interactions in nuclei.
- These findings may refine the analysis of neutrino quasielastic scattering data, such as from MiniBooNE.
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