High energy Gamow-Teller strenght in double beta decay
نویسندگان
چکیده
منابع مشابه
Gamow-Teller beta-decay rates for A <= 18 nuclei.
A comprehensive analysis is made of the experimental information on Gamow-Teller beta decay for the light (A & 18) nuclei. Experimental data on half-lives, Q values, and branching ratios are tabulated. Experimental log ft values and beta-decay matrix elements are deduced from these data. The one-body-transition densities necessary to predict the beta-decay matrix elements are then calculated us...
متن کاملChiral two-body currents in nuclei: Gamow-Teller transitions and neutrinoless double-beta decay.
We show that chiral effective field theory (EFT) two-body currents provide important contributions to the quenching of low-momentum-transfer Gamow-Teller transitions, and use chiral EFT to predict the momentum-transfer dependence that is probed in neutrinoless double-beta (0νββ) decay. We then calculate for the first time the 0νββ decay operator based on chiral EFT currents and study the nuclea...
متن کاملGamow-Teller strength distribution in the beta-decay of l°°Ag from total-absorption gamma spectrometry
The EC//3+-decay of the odd-odd nucleus l°°Ag was studied by means of total absorption v-ray spectrometry. Most of the Gamow-Teller strength was found to be concentrated at an excitation energy of 5.6 MeV in mopd, the FWHM of this resonance being 1.5 MeV. The measured strength distribution which is interpreted within the BCS approximation as being due to the dominant population of four-quasipar...
متن کاملGamow-teller Strength Distribution in the -decay of Exotic Nuclei
We describe experimental results on the Gamow-Teller strength distribution as obtained from the B-decay of exotic nuclei. The most complete results, in light nuclei, confirm the absence of strength noted in (p,n) measurements. In heavier nuclei it is the remote tail of the resonance that is established by 8-decay.
متن کاملBeta decay of l°3In: Evidence for the Gamow-Teller resonance near l°°Sn
The fl decay of the neutron-deficient isotope l°3In was investigated by using total absorption y-ray spectrometry on mass-separated sources. The measurement reveals a high-lying resonance of the fl-decay strength in striking disagreement with high-resolution y-ray data. The result is discussed in comparison with shell-model predictions. @ 1998 Elsevier Science B.V. PACS: 21.10.-k; 21.60.Cs; 23....
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1994
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)91476-1