Experimental determination of the Jπ components of the spin-dipole resonance in 12B

M. A. de Huu, A. M. van den Berg, N. Blasi, R. De Leo, M. Hagemann, M. N. Harakeh, J. Heyse, M. Hunyadi, S. Micheletti, H. Okamura, H. J. Wörtche

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Abstract

The inclusive 12C (over(d, →), 2He) and exclusive 12C (over(d, →), 2He + n) reactions have been studied with a beam energy of 171 MeV and scattering angles for the (d, 2He) reaction θ = 0 ° and 3°. The studies focused on the separation of the isovector spin-dipole resonance (IVSGDR) into its components by measuring tensor-analysing powers and observing the direct neutron decay to the low-lying proton-hole states in 11B. Merging the information obtained from both measurements resulted in the first-time verification of model-independent predictions of tensor-analysing powers at extreme forward angles and the experimental decomposition of the IVSGDR into its Jπ components. The experimental results are in reasonable agreement with theoretical estimates based on shell-model calculations.

Original languageEnglish
Pages (from-to)35-42
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume649
Issue number1
DOIs
Publication statusPublished - máj. 24 2007

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

de Huu, M. A., van den Berg, A. M., Blasi, N., De Leo, R., Hagemann, M., Harakeh, M. N., Heyse, J., Hunyadi, M., Micheletti, S., Okamura, H., & Wörtche, H. J. (2007). Experimental determination of the Jπ components of the spin-dipole resonance in 12B. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 649(1), 35-42. https://doi.org/10.1016/j.physletb.2007.03.031