### Abstract

We present a comparative analysis of two models for the A(γ, π. N). B reaction, which take into account the isobar configurations in the ground state of the nuclei: the δ. N correlation model and the quasifree pion photoproduction model. The considered models differ in their descriptions of the nucleus states. The δ. N correlation model takes into account the dynamic correlations of the nucleon and isobar formed in the virtual transition NN→δ. N, and in the quasifree pion photoproduction model, isobars and nucleons in the nucleus are considered as independent constituents. The predictions of the models are considered for two reactions O16(γ,π+p)C15 and O16(γ,π-p)O15. It is shown, that the two models predict the differential cross section significantly differing both in absolute values, and in the shape of the angular dependence. We compare the results of the δ. N correlation model for the (γ, π. N) and (γ, π. NN) reactions with the O16(γ,π-p) reaction data measured at BNL. Our results give support to the δ. N correlation model.

Original language | English |
---|---|

Pages (from-to) | 44-58 |

Number of pages | 15 |

Journal | Nuclear Physics A |

Volume | 937 |

DOIs | |

Publication status | Published - 1 May 2015 |

### Fingerprint

### Keywords

- Cross section
- Isobar configurations
- Pion photoproduction
- Reaction A(γ, πN)B
- δN correlations

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Nuclear Physics A*,

*937*, 44-58. https://doi.org/10.1016/j.nuclphysa.2015.02.007

**Isobar configurations : δN correlations versus the independent particle model.** / Glavanakov, I. V.; Tabachenko, A. N.

Research output: Contribution to journal › Article

*Nuclear Physics A*, vol. 937, pp. 44-58. https://doi.org/10.1016/j.nuclphysa.2015.02.007

}

TY - JOUR

T1 - Isobar configurations

T2 - δN correlations versus the independent particle model

AU - Glavanakov, I. V.

AU - Tabachenko, A. N.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - We present a comparative analysis of two models for the A(γ, π. N). B reaction, which take into account the isobar configurations in the ground state of the nuclei: the δ. N correlation model and the quasifree pion photoproduction model. The considered models differ in their descriptions of the nucleus states. The δ. N correlation model takes into account the dynamic correlations of the nucleon and isobar formed in the virtual transition NN→δ. N, and in the quasifree pion photoproduction model, isobars and nucleons in the nucleus are considered as independent constituents. The predictions of the models are considered for two reactions O16(γ,π+p)C15 and O16(γ,π-p)O15. It is shown, that the two models predict the differential cross section significantly differing both in absolute values, and in the shape of the angular dependence. We compare the results of the δ. N correlation model for the (γ, π. N) and (γ, π. NN) reactions with the O16(γ,π-p) reaction data measured at BNL. Our results give support to the δ. N correlation model.

AB - We present a comparative analysis of two models for the A(γ, π. N). B reaction, which take into account the isobar configurations in the ground state of the nuclei: the δ. N correlation model and the quasifree pion photoproduction model. The considered models differ in their descriptions of the nucleus states. The δ. N correlation model takes into account the dynamic correlations of the nucleon and isobar formed in the virtual transition NN→δ. N, and in the quasifree pion photoproduction model, isobars and nucleons in the nucleus are considered as independent constituents. The predictions of the models are considered for two reactions O16(γ,π+p)C15 and O16(γ,π-p)O15. It is shown, that the two models predict the differential cross section significantly differing both in absolute values, and in the shape of the angular dependence. We compare the results of the δ. N correlation model for the (γ, π. N) and (γ, π. NN) reactions with the O16(γ,π-p) reaction data measured at BNL. Our results give support to the δ. N correlation model.

KW - Cross section

KW - Isobar configurations

KW - Pion photoproduction

KW - Reaction A(γ, πN)B

KW - δN correlations

UR - http://www.scopus.com/inward/record.url?scp=84923375430&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923375430&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2015.02.007

DO - 10.1016/j.nuclphysa.2015.02.007

M3 - Article

VL - 937

SP - 44

EP - 58

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

ER -