Revalidation of the isobaric multiplet mass equation

We have determined the energy of the J(pi) = 1/2(+), T = 3/2 resonance in 32S(p,p) to be E(p) = 3374.7+/-0.8 keV. This disagrees with the previously accepted value of E(p) = 3370+/-1 keV by Abbondanno et al. [Nuovo Cimento 70A, 391 (1970)] and solves a problem raised by recent observations of unexpe...

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Published in:Physical review letters 2002-03, Vol.88 (12), p.122501-122501, Article 122501
Main Authors: Pyle, M C, García, A, Tatar, E, Cox, J, Nayak, B K, Triambak, S, Laughman, B, Komives, A, Lamm, L O, Rolon, J E, Finnessy, T, Knutson, L D, Voytas, P A
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Language:English
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Summary:We have determined the energy of the J(pi) = 1/2(+), T = 3/2 resonance in 32S(p,p) to be E(p) = 3374.7+/-0.8 keV. This disagrees with the previously accepted value of E(p) = 3370+/-1 keV by Abbondanno et al. [Nuovo Cimento 70A, 391 (1970)] and solves a problem raised by recent observations of unexpected deviations from the isobaric multiplet mass equation. This resonance is also important in calibrating the beta-delayed proton spectra from 33Ar and 32Ar, and our findings may modify previous conclusions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.88.122501