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Title: Scaling within the spectral function approach

Abstract

Scaling features of the nuclear electromagnetic response functions unveil aspects of nuclear dynamics that are crucial for interpreting neutrino-and electron-scattering data. In the large momentum-transfer regime, the nucleon-density response function defines a universal scaling function, which is independent of the nature of the probe. In this work, we analyze the nucleon-density response function of 12C, neglecting collective excitations. We employ particle and hole spectral functions obtained within two distinct many-body methods, both widely used to describe electroweak reactions in nuclei. We show that the two approaches provide compatible nucleon-density scaling functions that for large momentum transfers satisfy first-kind scaling. Both methods yield scaling functions characterized by an asymmetric shape, although less pronounced than that of experimental scaling functions. Finally, this asymmetry, only mildly affected by final state interactions, is mostly due to nucleon-nucleon correlations, encoded in the continuum component of the hole spectral function.

Authors:
 [1];  [2];  [3];  [1]
  1. Centro Mixto CSIC-Univ. de Valencia, Valencia (Spain). Inst. de Física Corpuscular (IFIC), Inst. de Investigación de Paterna
  2. Univ. of Surrey, Guildford (United Kingdom). Dept. of Physics
  3. INFN-TIFPA Trento Inst. of Fundamental Physics and Applications, Trento (Italy); Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); Spanish Ministerio de Economia y Competitividad (MINECO); Consiglio Nazionale delle Ricerche (CNR)
OSTI Identifier:
1466302
Alternate Identifier(s):
OSTI ID: 1430155
Grant/Contract Number:  
AC02-06CH11357; FIS2014-51948-C2-1-P; FIS2014-51948-C2-2-P; FIS2017-84038-C2-1-P; SEV-2014-0398
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Sobczyk, J. E., Rocco, N., Lovato, A., and Nieves, J. Scaling within the spectral function approach. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.035506.
Sobczyk, J. E., Rocco, N., Lovato, A., & Nieves, J. Scaling within the spectral function approach. United States. doi:10.1103/PhysRevC.97.035506.
Sobczyk, J. E., Rocco, N., Lovato, A., and Nieves, J. Wed . "Scaling within the spectral function approach". United States. doi:10.1103/PhysRevC.97.035506. https://www.osti.gov/servlets/purl/1466302.
@article{osti_1466302,
title = {Scaling within the spectral function approach},
author = {Sobczyk, J. E. and Rocco, N. and Lovato, A. and Nieves, J.},
abstractNote = {Scaling features of the nuclear electromagnetic response functions unveil aspects of nuclear dynamics that are crucial for interpreting neutrino-and electron-scattering data. In the large momentum-transfer regime, the nucleon-density response function defines a universal scaling function, which is independent of the nature of the probe. In this work, we analyze the nucleon-density response function of 12C, neglecting collective excitations. We employ particle and hole spectral functions obtained within two distinct many-body methods, both widely used to describe electroweak reactions in nuclei. We show that the two approaches provide compatible nucleon-density scaling functions that for large momentum transfers satisfy first-kind scaling. Both methods yield scaling functions characterized by an asymmetric shape, although less pronounced than that of experimental scaling functions. Finally, this asymmetry, only mildly affected by final state interactions, is mostly due to nucleon-nucleon correlations, encoded in the continuum component of the hole spectral function.},
doi = {10.1103/PhysRevC.97.035506},
journal = {Physical Review C},
issn = {2469-9985},
number = 3,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}

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Cited by: 2 works
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