Ghent University Academic Bibliography

Advanced

Stylized features of single-nucleon momentum distributions

Jan Ryckebusch UGent, Maarten Vanhalst and Wim Cosyn UGent (2015) JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS. 42(5).
abstract
Nuclear short-range correlations (SRC) typically manifest themselves in the tail parts of the single-nucleon momentum distributions. We propose an approximate practical method for computing those SRC contributions to the high-momentum parts. The framework adopted in this work is applicable throughout the nuclear mass table and corrects mean-field models for central, spin–isospin and tensor correlations by shifting the complexity induced by the SRC from the wave functions to the operators. It is argued that the expansion of these modified operators can be truncated to a low order. The proposed model can generate the SRC-related high-momentum tail of the single-nucleon momentum distribution. These are dominated by correlation operators acting on mean-field pairs with vanishing relative radial and angular-momentum quantum numbers. The proposed method explains the dominant role of proton–neutron pairs in generating the SRC and accounts for the magnitude and mass dependence of SRC as probed in inclusive electron scattering. It also provides predictions for the ratio of the amount of correlated proton–proton to proton–neutron pairs which are in line with the observations. In asymmetric nuclei, the correlations make the average kinetic energy for the minority nucleons larger than for the majority nucleons.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
nuclear reactions, electron scattering, nuclear short-range correlations, CORRELATION OPERATOR METHOD, SHORT-RANGE CORRELATIONS, GROUND-STATE, MATTER, O-16(E
journal title
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
J. Phys. G-Nucl. Part. Phys.
volume
42
issue
5
article number
055104
pages
17 pages
Web of Science type
Article
Web of Science id
000353459100008
JCR category
PHYSICS, NUCLEAR
JCR impact factor
2.448 (2015)
JCR rank
9/21 (2015)
JCR quartile
2 (2015)
ISSN
0954-3899
DOI
10.1088/0954-3899/42/5/055104
project
HPC-UGent: the central High Performance Computing infrastructure of Ghent University
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
5896271
handle
http://hdl.handle.net/1854/LU-5896271
date created
2015-03-16 09:24:05
date last changed
2017-03-27 11:02:19
@article{5896271,
  abstract     = {Nuclear short-range correlations (SRC) typically manifest themselves in the tail parts of the single-nucleon momentum distributions. We propose an approximate practical method for computing those SRC contributions to the high-momentum parts. The framework adopted in this work is applicable throughout the nuclear mass table and corrects mean-field models for central, spin--isospin and tensor correlations by shifting the complexity induced by the SRC from the wave functions to the operators. It is argued that the expansion of these modified operators can be truncated to a low order. The proposed model can generate the SRC-related high-momentum tail of the single-nucleon momentum distribution. These are dominated by correlation operators acting on mean-field pairs with vanishing relative radial and angular-momentum quantum numbers. The proposed method explains the dominant role of proton--neutron pairs in generating the SRC and accounts for the magnitude and mass dependence of SRC as probed in inclusive electron scattering. It also provides predictions for the ratio of the amount of correlated proton--proton to proton--neutron pairs which are in line with the observations. In asymmetric nuclei, the correlations make the average kinetic energy for the minority nucleons larger than for the majority nucleons.},
  articleno    = {055104},
  author       = {Ryckebusch, Jan and Vanhalst, Maarten and Cosyn, Wim},
  issn         = {0954-3899},
  journal      = {JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS},
  keyword      = {nuclear reactions,electron scattering,nuclear short-range correlations,CORRELATION OPERATOR METHOD,SHORT-RANGE CORRELATIONS,GROUND-STATE,MATTER,O-16(E},
  language     = {eng},
  number       = {5},
  pages        = {17},
  title        = {Stylized features of single-nucleon momentum distributions},
  url          = {http://dx.doi.org/10.1088/0954-3899/42/5/055104},
  volume       = {42},
  year         = {2015},
}

Chicago
Ryckebusch, Jan, Maarten Vanhalst, and Wim Cosyn. 2015. “Stylized Features of Single-nucleon Momentum Distributions.” Journal of Physics G-nuclear and Particle Physics 42 (5).
APA
Ryckebusch, J., Vanhalst, M., & Cosyn, W. (2015). Stylized features of single-nucleon momentum distributions. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 42(5).
Vancouver
1.
Ryckebusch J, Vanhalst M, Cosyn W. Stylized features of single-nucleon momentum distributions. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS. 2015;42(5).
MLA
Ryckebusch, Jan, Maarten Vanhalst, and Wim Cosyn. “Stylized Features of Single-nucleon Momentum Distributions.” JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 42.5 (2015): n. pag. Print.