Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data
The extraction of the relative abundances of short-range correlated (SRC) nucleon pairs from inclusive electron scattering is studied using the generalized contact formalism (GCF) with several nuclear interaction models. GCF calculations can reproduce the observed scaling of the cross-section ratios...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/142003 |
| _version_ | 1826190466113077248 |
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| author | Weiss, R Denniston, AW Pybus, JR Hen, O Piasetzky, E Schmidt, A Weinstein, LB Barnea, N |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Weiss, R Denniston, AW Pybus, JR Hen, O Piasetzky, E Schmidt, A Weinstein, LB Barnea, N |
| author_sort | Weiss, R |
| collection | MIT |
| description | The extraction of the relative abundances of short-range correlated (SRC) nucleon pairs from inclusive electron scattering is studied using the generalized contact formalism (GCF) with several nuclear interaction models. GCF calculations can reproduce the observed scaling of the cross-section ratios for nuclei relative to deuterium at high xB and large Q2, a2=(σA/A)/(σd/2). In the nonrelativistic instant-form formulation, the calculation is very sensitive to the model parameters and only reproduces the data using parameters that are inconsistent with ab initio many-body calculations. Using a light-cone GCF formulation significantly decreases this sensitivity and improves the agreement with ab initio calculations. The ratio of similar mass isotopes, such as Ca40 and Ca48, should be sensitive to the nuclear asymmetry dependence of SRCs, but is found to also be sensitive to low-energy nuclear structure. Thus the empirical association of SRC pair abundances with the measured a2 values is only accurate to about 20%. Improving this will require cross-section calculations that reproduce the data while properly accounting for both nuclear structure and relativistic effects. |
| first_indexed | 2024-09-23T08:40:22Z |
| format | Article |
| id | mit-1721.1/142003 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:40:22Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1420032023-02-09T20:08:41Z Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data Weiss, R Denniston, AW Pybus, JR Hen, O Piasetzky, E Schmidt, A Weinstein, LB Barnea, N Massachusetts Institute of Technology. Department of Physics The extraction of the relative abundances of short-range correlated (SRC) nucleon pairs from inclusive electron scattering is studied using the generalized contact formalism (GCF) with several nuclear interaction models. GCF calculations can reproduce the observed scaling of the cross-section ratios for nuclei relative to deuterium at high xB and large Q2, a2=(σA/A)/(σd/2). In the nonrelativistic instant-form formulation, the calculation is very sensitive to the model parameters and only reproduces the data using parameters that are inconsistent with ab initio many-body calculations. Using a light-cone GCF formulation significantly decreases this sensitivity and improves the agreement with ab initio calculations. The ratio of similar mass isotopes, such as Ca40 and Ca48, should be sensitive to the nuclear asymmetry dependence of SRCs, but is found to also be sensitive to low-energy nuclear structure. Thus the empirical association of SRC pair abundances with the measured a2 values is only accurate to about 20%. Improving this will require cross-section calculations that reproduce the data while properly accounting for both nuclear structure and relativistic effects. 2022-04-21T13:55:42Z 2022-04-21T13:55:42Z 2021 2022-04-21T13:34:47Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/142003 Weiss, R, Denniston, AW, Pybus, JR, Hen, O, Piasetzky, E et al. 2021. "Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data." Physical Review C, 103 (3). en 10.1103/PHYSREVC.103.L031301 Physical Review C Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Weiss, R Denniston, AW Pybus, JR Hen, O Piasetzky, E Schmidt, A Weinstein, LB Barnea, N Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title | Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title_full | Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title_fullStr | Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title_full_unstemmed | Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title_short | Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data |
| title_sort | extracting the number of short range correlated nucleon pairs from inclusive electron scattering data |
| url | https://hdl.handle.net/1721.1/142003 |
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