Gamow-Teller strength in the continuum and quenching problem

T. Wakasa, K. Hatanaka, H. Sakai, S. Fujita, T. Nonaka, K. Yako, K. Sekiguchi, H. Okamura, T. Uesaka, H. Otsu, S. Ishida, N. Sakamoto, Y. Satou, T. Ohnishi, M. B. Greenfield

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Abstract

The double differential cross sections for θlab between 0.0° and 14.7° and the polarization transfer coefficient DNN(0°) for the 27 Al(p→, n→) reaction have been measured at a bombarding energy of 295 MeV. A multipole decomposition technique is applied for the cross section data to extract L = 0, 1, 2, and 3 contributions. A fairly large L = 0 Gamow-Teller (GT) contribution is observed in the continuum region up to 50 MeV, which could be in part ascribed to the quenched GT strength. A limit on the effect that the Δ(1232)-isobar nucleon-hole admixture has upon the GT strength is estimated.

Original languageEnglish
Pages (from-to)26-31
Number of pages6
JournalNuclear Physics A
Volume687
Issue number1-2
DOIs
Publication statusPublished - Apr 23 2001
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Wakasa, T., Hatanaka, K., Sakai, H., Fujita, S., Nonaka, T., Yako, K., ... Greenfield, M. B. (2001). Gamow-Teller strength in the continuum and quenching problem. Nuclear Physics A, 687(1-2), 26-31. https://doi.org/10.1016/S0375-9474(01)00596-6