Electric properties of the Beryllium-11 system in Halo EFT
We compute E1 transitions and electric radii in the Beryllium-11 nucleus using an effective field theory that exploits the separation of scales in this halo system. We fix the leading-order parameters of the EFT from measured data on the 1 / 2 + and 1 / 2 − levels in 11Be and the B(E1) strength for...
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Published in | Nuclear physics. A Vol. 865; no. 1; pp. 17 - 42 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
15.08.2011
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Subjects | |
Online Access | Get full text |
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Summary: | We compute E1 transitions and electric radii in the Beryllium-11 nucleus using an effective field theory that exploits the separation of scales in this halo system. We fix the leading-order parameters of the EFT from measured data on the
1
/
2
+
and
1
/
2
−
levels in
11Be and the B(E1) strength for the transition between them. We then obtain predictions for the B(E1) strength for Coulomb dissociation of the
11Be nucleus to the continuum. We also compute the charge radii of the
1
/
2
+
and
1
/
2
−
states. Agreement with experiment within the expected accuracy of a leading-order computation in this EFT is obtained. We also discuss how next-to-leading-order (NLO) corrections involving both s-wave and p-wave
10Be–neutron interactions affect our results, and display the NLO predictions for quantities which are free of additional short-distance operators at this order. Information on neutron–
10Be scattering in the relevant channels is inferred. |
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ISSN: | 0375-9474 |
DOI: | 10.1016/j.nuclphysa.2011.06.028 |