Isospin symmetry in the odd-odd mirror nuclei<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>44</mml:mn></mml:msup></mml:math>V/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>44</mml:mn></mml:msup></mml:math>Sc
M. J. TaylorDepartment of Physics, University of York, Heslington, York, YO10 5DD, United KingdomM. A. BentleyDepartment of Physics, University of York, Heslington, York, YO10 5DD, United KingdomJ. R. BrownDepartment of Physics, University of York, Heslington, York, YO10 5DD, United KingdomP. E. KentDepartment of Physics, University of York, Heslington, York, YO10 5DD, United KingdomR. WadsworthDepartment of Physics, University of York, Heslington, York, YO10 5DD, United KingdomC. J. ListerPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAD. SeweryniakPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAM. P. CarpenterPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAR. V. F. JanssensPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAS. ZhuPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAT. LauritsenPhysics Division, Argonne National Laboratory, Argonne, Chicago, Illinois 60439, USAL.-L. AnderssonDepartment of Physics, Lund University, S-22100 Lund, SwedenE.K. JohanssonDepartment of Physics, Lund University, S-22100 Lund, SwedenP. E. GarrettDepartment of Physics, University of Guelph, Guelph, Ontario N1G2W1, CanadaK. L. GreenDepartment of Physics, University of Guelph, Guelph, Ontario N1G2W1, CanadaG. A. DemandDepartment of Physics, University of Guelph, Guelph, Ontario N1G2W1, CanadaS. M. LenziDipartimento di Fisica dell’Università and INFN, Sezione di Padova, I-35131 Padova, Italy
ABI
Аннотация
Excited states in the $N=Z\ensuremath{-}2$ nucleus ${}^{44}$V have been observed for the first time. The states have been identified through particle-$\ensuremath{\gamma}$-$\ensuremath{\gamma}$ coincidence relationships and comparison with analog states in the mirror nucleus ${}^{44}$Sc. Mirror energy differences have been extracted and compared to state-of-the-art shell-model calculations which include charge-symmetry-breaking forces. Observed decay pattern asymmetries between the mirror pair are discussed in terms of core excitations, electromagnetic spin-orbit effects and isospin mixing.
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