# Nucleon and nucleon-pair momentum distributions in $A\le 12$ nuclei

## Abstract

Background: Momentum distributions of individual nucleons and nucleon pairs reflect features of the short-range structure of nuclei and provide useful insights into various reactions on nuclei, such as ( e , e ' p ) and ( e , e ' p p / p n ) electrodisintegration processes or neutrino-nucleus interaction experiments. Purpose: To provide the nuclear physics community with the results (available online) of a systematic study of single-nucleon momentum distributions and nucleon-pair and nucleon-cluster momentum distributions for A ≤ 12 nuclei. Method: The realistic Argonne v 18 two-nucleon and Urbana X three-nucleon potentials are used to generate accurate variational Monte Carlo wave functions for the A ≤ 12 nuclei; quantum Monte Carlo methods are used to calculate the momentum distributions. Results: Single-nucleon distributions are given, broken down into proton and neutron components and spin-up and spin-down components where appropriate. Nucleon-pair momentum distributions are given either in pair spin and isospin ST projection or for p p , p n , and n n pairs. Nucleon-cluster momentum distributions include d p in 3 He, t p and d d in 4 He, α d in 6 Li, α t in 7 Li, and α α in 8 Be.more »

- Authors:

- Publication Date:

- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC)

- OSTI Identifier:
- 1395166

- DOE Contract Number:
- AC02-06CH11357

- Resource Type:
- Journal Article

- Journal Name:
- Physical Review. C, Nuclear Physics

- Additional Journal Information:
- Journal Volume: 89; Journal Issue: 2; Journal ID: ISSN 0556-2813

- Publisher:
- American Physical Society (APS)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

### Citation Formats

```
Wiringa, R. B., Schiavilla, R., Pieper, Steven C., and Carlson, J.
```*Nucleon and nucleon-pair momentum distributions in A≤12 nuclei*. United States: N. p., 2014.
Web. doi:10.1103/PhysRevC.89.024305.

```
Wiringa, R. B., Schiavilla, R., Pieper, Steven C., & Carlson, J.
```*Nucleon and nucleon-pair momentum distributions in A≤12 nuclei*. United States. doi:10.1103/PhysRevC.89.024305.

```
Wiringa, R. B., Schiavilla, R., Pieper, Steven C., and Carlson, J. Sat .
"Nucleon and nucleon-pair momentum distributions in A≤12 nuclei". United States. doi:10.1103/PhysRevC.89.024305.
```

```
@article{osti_1395166,
```

title = {Nucleon and nucleon-pair momentum distributions in A≤12 nuclei},

author = {Wiringa, R. B. and Schiavilla, R. and Pieper, Steven C. and Carlson, J.},

abstractNote = {Background: Momentum distributions of individual nucleons and nucleon pairs reflect features of the short-range structure of nuclei and provide useful insights into various reactions on nuclei, such as ( e , e ' p ) and ( e , e ' p p / p n ) electrodisintegration processes or neutrino-nucleus interaction experiments. Purpose: To provide the nuclear physics community with the results (available online) of a systematic study of single-nucleon momentum distributions and nucleon-pair and nucleon-cluster momentum distributions for A ≤ 12 nuclei. Method: The realistic Argonne v 18 two-nucleon and Urbana X three-nucleon potentials are used to generate accurate variational Monte Carlo wave functions for the A ≤ 12 nuclei; quantum Monte Carlo methods are used to calculate the momentum distributions. Results: Single-nucleon distributions are given, broken down into proton and neutron components and spin-up and spin-down components where appropriate. Nucleon-pair momentum distributions are given either in pair spin and isospin ST projection or for p p , p n , and n n pairs. Nucleon-cluster momentum distributions include d p in 3 He, t p and d d in 4 He, α d in 6 Li, α t in 7 Li, and α α in 8 Be. Conclusions: The momentum distributions exhibit common characteristic shapes, with tensor correlations (or lack thereof) playing a dominant role in the 1.5–3 fm - 1 range, while spin-isospin correlations dominate at higher momenta.},

doi = {10.1103/PhysRevC.89.024305},

journal = {Physical Review. C, Nuclear Physics},

issn = {0556-2813},

number = 2,

volume = 89,

place = {United States},

year = {2014},

month = {2}

}

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