An α-Particle Model for 16O: Is There a New Four-Body Scale? |
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| Authors: | Y Ronen N Barnea W Leidemann |
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| Institution: | (1) The Racah Institute of Physics, The Hebrew University, 91904 Jerusalem, Israel;(2) Department of Physics and INFN, University of Trento, 38050 Povo, Italy |
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| Abstract: | The 16O nucleus is modelled as a system of four α-particles. It is shown that a Hamiltonian that includes established two- and three-body
forces reproducing the α-α phase shifts, the 8Be resonance, and the first and second 0+ states of 12C overbinds the 16O nucleus. To rectify this a novel four-body force is introduced, which then leads to a good agreement with the low-lying
experimental spectrum of 16O. |
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