Experimental identification of the T = 1, Jπ = 6+ state of 54Co and isospin symmetry in A = 54 studied via one-nucleon knockout reactions
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Spieker, M., Weisshaar, D., Gade, A., Brown, B. A., Adrich, P., Bazin, D., Bentley, M.A., Brown, J.R., Campbell, C.M., Diget, C.Aa. , Elman, B., Glasmacher, T., Hill, M., Longfellow, B., Pritychenko, B., Ratkiewicz, A., Rhodes, D. and Tostevin, J.A. (2019) Experimental identification of the T = 1, Jπ = 6+ state of 54Co and isospin symmetry in A = 54 studied via one-nucleon knockout reactions Physical Review C, 100 (6), 061303(R).
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Official URL: https://doi.org/10.1103/PhysRevC.100.061303
Abstract
New experimental data obtained from γ-ray tagged one-neutron and one-proton knockout from 55Co is presented. A candidate for the sought-after T = 1, T z = 0, Jπ = 6+ state in 54Co is proposed based on a comparison to the new data on 54Fe, the corresponding observables predicted by large-scale-shell-model (LSSM) calculations in the full fp-model space employing charge-dependent contributions, and isospin-symmetry arguments. Furthermore, possible isospin-symmetry breaking in the A = 54, T = 1 triplet is studied by calculating the experimental c coefficients of the isobaric mass multiplet equation (IMME) up to the maximum possible spin J = 6 expected for the (1f7/2)-2 two-hole configuration relative to the doubly-magic nucleus 56Ni. The experimental quantities are compared to the theoretically predicted c coefficients from LSSM calculations using two-body matrix elements obtained from a realistic chiral effective field theory potential at next-to-next-to-next-to leading order (N3LO).
| Item Type: | Article | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Divisions : | Faculty of Engineering and Physical Sciences > Physics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Date : | 11 December 2019 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Funders : | Science and Technology Facilities Council (STFC) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI : | 10.1103/PhysRevC.100.061303 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Copyright Disclaimer : | © 2019 American Physical Society | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Additional Information : | This work was supported by the National Science Foundation under Grant No. PHY-1565546 (NSCL) and PHY-1811855, the DOE National Nuclear Security Ad- ministration through the Nuclear Science and Security Consortium under Award No. DE-NA0003180 as well as by the UK Science and Technology Facilities Coun- cil (STFC) through Research Grant No. ST/F005314/1, ST/P003885/1 and GR/T18486/01. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Depositing User : | Diane Maxfield | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Date Deposited : | 21 Nov 2019 15:18 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified : | 21 Jan 2020 14:14 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/853195 |
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