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Title: Electromagnetic and neutral-weak response functions of 4He and 12C

Journal Article · · Physical Review C, Nuclear Physics
 [1]; ORCiD logo [2]; ORCiD logo [2];  [1];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center; Old Dominion Univ., Norfolk, VA (United States). Dept. of Physics

A major goal of nuclear theory is to understand the strong interaction in nuclei as it manifests itself in terms of two- and many-body forces among the nuclear constituents, the protons and neutrons, and the interactions of these constituents with external electroweak probes via one- and many-body currents. The objective of the present work is to calculate the quasielastic electroweak response functions in light nuclei within the realistic dynamical framework outlined above. These response functions determine the inclusive cross section as function of the lepton momentum and energy transfers. Their ab initio calculation is a very challenging quantum many-body problem, since it requires summation over the entire excitation spectrum of the nucleus and inclusion in the electroweak currents of one- and many-body terms. Green's functions Monte Carlo methods allow one to circumvent both difficulties by computing the response in imaginary time (the so-called Euclidean response) and hence summing implicitly over the bound and continuum states of the nucleus, and by implementing specific algorithms designed to deal with the complicated spin-isospin structure of nuclear many-body operators. Theoretical predictions for 4He and 12C, confirmed by experiment in the electromagnetic case, show that two-body currents generate excess transverse strength from threshold to the quasielastic to the dip region and beyond. In conclusion, these results challenge the conventional picture of quasielastic inclusive scattering as being largely dominated by single-nucleon knockout processes.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC52-06NA25396; AC02-06CH11357; AC02-05CH11231; AC05-06OR23177
OSTI ID:
1406196
Alternate ID(s):
OSTI ID: 1184690
Report Number(s):
LA-UR-15-20031; TRN: US1702904
Journal Information:
Physical Review C, Nuclear Physics, Vol. 91, Issue 6; ISSN 0556-2813
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (13)

Neutrino–nucleus cross sections for oscillation experiments journal December 2017
Low-energy neutrino scattering in experiment and astrophysics journal July 2019
Neutral current neutrino-nucleus scattering: theory journal January 2020
From response functions to cross sections in neutrino scattering off the deuteron and trinucleons journal December 2019
Neutrino-deuteron scattering: Uncertainty quantification and new L 1 , A constraints journal January 2020
Momentum space treatment of inclusive neutrino scattering off the deuteron and trinucleons journal July 2018
Lattice QCD and neutrino-nucleus scattering journal November 2019
Nuclear Axial Currents in Chiral Effective Field Theory text January 2015
Unified description of electron-nucleus scattering within the spectral function formalism text January 2015
Neutrino-Induced Reactions on Nuclei text January 2016
Momentum space treatment of inclusive neutrino scattering off the deuteron and trinucleons text January 2018
Lattice QCD and Neutrino-Nucleus Scattering text January 2019
Neutral Current Neutrino-Nucleus Scattering. Theory text January 2019

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