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Spectroscopic factors and asymptotic normalization coeffcients in mirror three-body systems

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
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Timofeyuk, NKUNSPECIFIEDUNSPECIFIED
Thompson, IJUNSPECIFIEDUNSPECIFIED
Date : November 2008
Identification Number : 10.1103/PhysRevC.78.054322
Copyright Disclaimer : Copyright 2008 American Physical Society. All rights reserved.
Related URLs :
Additional Information : Copyright 2008 American Physical Society. All rights reserved.
Depositing User : Symplectic Elements
Date Deposited : 22 Mar 2016 18:41
Last Modified : 24 Mar 2016 09:55
URI: http://epubs.surrey.ac.uk/id/eprint/810205

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