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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.

Physical Review Letters
|May 27, 2014
PubMed
Summary

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.

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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.