Isospin dependence of electromagnetic transition strengths among an isobaric triplet

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title = "Isospin dependence of electromagnetic transition strengths among an isobaric triplet",
abstract = "Electric quadrupole matrix elements, Mp, for the Jπ=2+→0+, ΔT=0, T=1 transitions across the A=46 isobaric multiplet 46Cr-46V-46Ti have been measured at GSI with the FRS-LYCCA-AGATA setup. This allows direct insight into the isospin purity of the states of interest by testing the linearity of Mp with respect to Tz. Pairs of nuclei in the T=1 triplet were studied using identical reaction mechanisms in order to control systematic errors. The Mp values were obtained with two different methodologies: (i) a relativistic Coulomb excitation experiment was performed for 46Cr and 46Ti; (ii) a “stretched target” technique was adopted here, for the first time, for lifetime measurements in 46V and 46Ti. A constant value of Mp across the triplet has been observed. Shell-model calculations performed within the fp shell fail to reproduce this unexpected trend, pointing towards the need of a wider valence space. This result is confirmed by the good agreement with experimental data achieved with an interaction which allows excitations from the underlying sd shell. A test of the linearity rule for all published data on complete T=1 isospin triplets is presented.",
author = "A. Boso and Milne, {S. A.} and Bentley, {M. A.} and F. Recchia and Lenzi, {S. M.} and D. Rudolph and M. Labiche and X. Pereira-Lopez and S. Afara and F. Ameil and T. Arici and S. Aydin and M. Axiotis and D. Barrientos and G. Benzoni and B. Birkenbach and Boston, {A. J.} and Boston, {H. C.} and P. Boutachkov and A. Bracco and Bruce, {A. M.} and B. Bruyneel and B. Cederwall and E. Clement and Cortes, {M. L.} and Cullen, {D. M.} and P. D{\'e}sesquelles and Zs Dombr{\`a}di and C. Domingo-Pardo and J. Eberth and C. Fahlander and M. Gelain and V. Gonz{\'a}lez and John, {P. R.} and J. Gerl and P. Golubev and M. G{\'o}rska and A. Gottardo and T. Grahn and L. Grassi and T. Habermann and Harkness-Brennan, {L. J.} and Henry, {T. W.} and H. Hess and I. Kojouharov and W. Korten and N. Lalovi{\'c} and M. Lettmann and C. Lizarazo and C. Louchart-Henning and R. Menegazzo and D. Mengoni and E. Merchan and C. Michelagnoli and B. Million and V. Modamio and Th. Moeller and Napoli, {D. R.} and J. Nyberg and {Nara Singh}, {B. S.} and H. Pai and N. Pietralla and S. Pietri and Zs Podolyak and {Perez Vidal}, {R. M.} and A. Pullia and D. Ralet and G. Rainovski and M. Reese and P. Reiter and Salsac, {M. D.} and E. Sanchis and Sarmiento, {L. G.} and H. Schaffner and Scruton, {L. M.} and P.P. Singh and C. Stahl and S. Uthayakumaar and Valiente-Dob{\'o}n, {J. J.} and O. Wieland",
year = "2019",
month = oct,
day = "10",
doi = "10.1016/j.physletb.2019.134835",
language = "English",
volume = "797",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",