Relativistic effects in ab initio electronnucleus scattering
The electromagnetic responses obtained from Green's function Monte Carlo (GFMC) calculations are based on realistic treatments of nuclear interactions and currents. The main limitations of this method comes from its nonrelativistic nature and its computational cost, the latter hampering the direct evaluation of the inclusive cross sections as measured by experiments. We extend the applicability of GFMC in the quasielastic region to intermediate momentum transfers by performing the calculations in a reference frame that minimizes nucleon momenta. Additional relativistic effects in the kinematics are accounted for employing the twofragment model. In addition, we developed a novel algorithm, based on the concept of firstkind scaling, to compute the inclusive electromagnetic cross section of ^{4}He through an accurate and reliable interpolation of the response functions. A very good agreement is obtained between theoretical and experimental cross sections for a variety of kinematical setups. Finally, this offers a promising prospect for the data analysis of neutrinooscillation experiments that requires an accurate description of nuclear dynamics in which relativistic effects are fully accounted for.
 Authors:

^{[1]};
^{[2]};
^{[3]};
^{[2]}
 Univ. of Surrey, Guildford (United Kingdom)
 Univ. di Trento, Trento (Italy); INFNTIFPA Trento Institute of Fundamental Physics and Applications, Trento (Italy)
 INFNTIFPA Trento Institute of Fundamental Physics and Applications, Trento (Italy); Argonne National Lab. (ANL), Argonne, IL (United States)
 Publication Date:
 Grant/Contract Number:
 AC0206CH11357
 Type:
 Accepted Manuscript
 Journal Name:
 Physical Review C
 Additional Journal Information:
 Journal Volume: 97; Journal Issue: 5; Journal ID: ISSN 24699985
 Publisher:
 American Physical Society (APS)
 Research Org:
 Argonne National Lab. (ANL), Argonne, IL (United States)
 Sponsoring Org:
 USDOE Office of Science (SC), Nuclear Physics (NP) (SC26)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
 OSTI Identifier:
 1466405
 Alternate Identifier(s):
 OSTI ID: 1436009
Rocco, Noemi, Leidemann, Winfried, Lovato, Alessandro, and Orlandini, Giuseppina. Relativistic effects in ab initio electronnucleus scattering. United States: N. p.,
Web. doi:10.1103/PhysRevC.97.055501.
Rocco, Noemi, Leidemann, Winfried, Lovato, Alessandro, & Orlandini, Giuseppina. Relativistic effects in ab initio electronnucleus scattering. United States. doi:10.1103/PhysRevC.97.055501.
Rocco, Noemi, Leidemann, Winfried, Lovato, Alessandro, and Orlandini, Giuseppina. 2018.
"Relativistic effects in ab initio electronnucleus scattering". United States.
doi:10.1103/PhysRevC.97.055501.
@article{osti_1466405,
title = {Relativistic effects in ab initio electronnucleus scattering},
author = {Rocco, Noemi and Leidemann, Winfried and Lovato, Alessandro and Orlandini, Giuseppina},
abstractNote = {The electromagnetic responses obtained from Green's function Monte Carlo (GFMC) calculations are based on realistic treatments of nuclear interactions and currents. The main limitations of this method comes from its nonrelativistic nature and its computational cost, the latter hampering the direct evaluation of the inclusive cross sections as measured by experiments. We extend the applicability of GFMC in the quasielastic region to intermediate momentum transfers by performing the calculations in a reference frame that minimizes nucleon momenta. Additional relativistic effects in the kinematics are accounted for employing the twofragment model. In addition, we developed a novel algorithm, based on the concept of firstkind scaling, to compute the inclusive electromagnetic cross section of 4He through an accurate and reliable interpolation of the response functions. A very good agreement is obtained between theoretical and experimental cross sections for a variety of kinematical setups. Finally, this offers a promising prospect for the data analysis of neutrinooscillation experiments that requires an accurate description of nuclear dynamics in which relativistic effects are fully accounted for.},
doi = {10.1103/PhysRevC.97.055501},
journal = {Physical Review C},
number = 5,
volume = 97,
place = {United States},
year = {2018},
month = {5}
}