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Title: The nuclear contacts and short range correlations in nuclei

Abstract

Atomic nuclei are complex strongly interacting systems and their exact theoretical description is a long-standing challenge. An approximate description of nuclei can be achieved by separating its short and long range structure. This separation of scales stands at the heart of the nuclear shell model and effective field theories that describe the long-range structure of the nucleus using a mean-field approximation. We present here an effective description of the complementary short-range structure using contact terms and stylized two-body asymptotic wave functions. The possibility to extract the nuclear contacts from experimental data is presented. Regions in the two-body momentum distribution dominated by high-momentum, close-proximity, nucleon pairs are identified and compared to experimental data. The amount of short-range correlated (SRC) nucleon pairs is determined and compared to measurements. Non-combinatorial isospin symmetry for SRC pairs is identified. The obtained one-body momentum distributions indicate dominance of SRC pairs above the nuclear Fermi-momentum.

Authors:
; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1745066
Alternate Identifier(s):
OSTI ID: 1499372
Grant/Contract Number:  
FG02-94ER40818
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 780 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Weiss, R., Cruz-Torres, R., Barnea, N., Piasetzky, E., and Hen, O. The nuclear contacts and short range correlations in nuclei. Netherlands: N. p., 2018. Web. doi:10.1016/j.physletb.2018.01.061.
Weiss, R., Cruz-Torres, R., Barnea, N., Piasetzky, E., & Hen, O. The nuclear contacts and short range correlations in nuclei. Netherlands. https://doi.org/10.1016/j.physletb.2018.01.061
Weiss, R., Cruz-Torres, R., Barnea, N., Piasetzky, E., and Hen, O. Tue . "The nuclear contacts and short range correlations in nuclei". Netherlands. https://doi.org/10.1016/j.physletb.2018.01.061.
@article{osti_1745066,
title = {The nuclear contacts and short range correlations in nuclei},
author = {Weiss, R. and Cruz-Torres, R. and Barnea, N. and Piasetzky, E. and Hen, O.},
abstractNote = {Atomic nuclei are complex strongly interacting systems and their exact theoretical description is a long-standing challenge. An approximate description of nuclei can be achieved by separating its short and long range structure. This separation of scales stands at the heart of the nuclear shell model and effective field theories that describe the long-range structure of the nucleus using a mean-field approximation. We present here an effective description of the complementary short-range structure using contact terms and stylized two-body asymptotic wave functions. The possibility to extract the nuclear contacts from experimental data is presented. Regions in the two-body momentum distribution dominated by high-momentum, close-proximity, nucleon pairs are identified and compared to experimental data. The amount of short-range correlated (SRC) nucleon pairs is determined and compared to measurements. Non-combinatorial isospin symmetry for SRC pairs is identified. The obtained one-body momentum distributions indicate dominance of SRC pairs above the nuclear Fermi-momentum.},
doi = {10.1016/j.physletb.2018.01.061},
journal = {Physics Letters B},
number = C,
volume = 780,
place = {Netherlands},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2018.01.061

Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1. Fig. 1.: The ratio of proton–proton to proton–neutron SRC pairs in 4He as a function of the pair momentum extracted from 4He(e,e’pN) measurements [47]. The colored lines show the equivalent ab-initio two-body momentum densities ratio integrated over the c.m. momentum from 0 to $K$max that varies from zero to infinitymore » [16]. The solid (dashed) black line is the contact theory prediction calculated using the contacts extracted in momentum (coordinate) space (Eq. (7)). (For interpretation of the colors in the figure(s), the reader is referred to the web version of this article.)« less

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Works referencing / citing this record:

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Isospin composition of the high-momentum fluctuations in nuclei from asymptotic momentum distributions
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Probing the core of the strong nuclear interaction
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Universal short-range correlations in bosonic helium clusters
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.