Spectroscopic factors and asymptotic normalization coeffcients in mirror three-body systems
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Timofeyuk, NK and Thompson, IJ (2008) Spectroscopic factors and asymptotic normalization coeffcients in mirror three-body systems PHYSICAL REVIEW C, 78 (5), ARTN 05432.
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Abstract
Using a three-body model, we study the dependence of spectroscopic factors for the overlap integrals ⟨core+N|core+N+N⟩ on the binding energy of the core + N subsystem, considering as prototypes He6, Be6, Li9, C9, O18, and Ne18. We show that at small N-core binding energies these spectroscopic factors can be strongly influenced by the geometrical mismatch between the two-body N-core wave function that stretches into the classically forbidden region and the spatially confined three-body function. This mismatch comes from the strong two-body correlations between the nucleons outside the core and due to the core recoil effects. The mismatch leads to symmetry breaking in mirror spectroscopic factors that in some cases can be large enough to be observed in nucleon removal reactions. It is also responsible for deviations of the ratios of mirror asymptotic normalization coefficients (ANCs) from the simple model-independent analytical estimates. We discuss the influence of such mirror symmetry breaking on the prediction of direct stellar (p,γ) reactions from the measured mirror neutron ANCs.
| Item Type: | Article | |||||||||
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| Subjects : | Physics | |||||||||
| Divisions : | Faculty of Engineering and Physical Sciences > Physics | |||||||||
| Authors : |
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| Date : | November 2008 | |||||||||
| DOI : | 10.1103/PhysRevC.78.054322 | |||||||||
| Copyright Disclaimer : | Copyright 2008 American Physical Society. All rights reserved. | |||||||||
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| Additional Information : | Copyright 2008 American Physical Society. All rights reserved. | |||||||||
| Depositing User : | Symplectic Elements | |||||||||
| Date Deposited : | 22 Mar 2016 18:41 | |||||||||
| Last Modified : | 31 Oct 2017 18:08 | |||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/810205 |
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