TY - JOUR
T1 - A solution to the old puzzle of 0+ resonances above the 0+2 Hoyle state in 12C - A new analysis with complex-scaled 3α OCM - A n
AU - Ohtsubo, S.
AU - Fukushima, Y.
AU - Kamimura, M.
AU - Hiyama, E.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2014
Y1 - 2014
N2 - We have developed the complex-scaling method (CSM) by using the complex-range (or oscillating) Gaussian basis functions that are suited for describing highly oscillating few-body wave functions. The eigenvalue distribution of the complex scaled Hamiltonian becomes much more precise and the maximum scaling angle becomes drastically larger than those given by the use of real-range Gaussians. Owing to this advantage, we were able to isolate the S-matrix pole of the new broad 0+3 resonance from the 3α continuum. This confirms the Kurokawa-Kato's prediction (2005) of the new 0+3 resonance, which is considered to correspond to the newly observed 0+3 resonance (Ex 9.04 MeV, Γ 1.45 MeV) by Itoh et al. (2013). As a result the long-standing puzzle for the 0+ and 2+ resonances above the 0+ Hoyle state in 12C was solved. In this paper, the negative parity resonances with J 1-, 2-, 3-, 4- and 5- are newly calculated.
AB - We have developed the complex-scaling method (CSM) by using the complex-range (or oscillating) Gaussian basis functions that are suited for describing highly oscillating few-body wave functions. The eigenvalue distribution of the complex scaled Hamiltonian becomes much more precise and the maximum scaling angle becomes drastically larger than those given by the use of real-range Gaussians. Owing to this advantage, we were able to isolate the S-matrix pole of the new broad 0+3 resonance from the 3α continuum. This confirms the Kurokawa-Kato's prediction (2005) of the new 0+3 resonance, which is considered to correspond to the newly observed 0+3 resonance (Ex 9.04 MeV, Γ 1.45 MeV) by Itoh et al. (2013). As a result the long-standing puzzle for the 0+ and 2+ resonances above the 0+ Hoyle state in 12C was solved. In this paper, the negative parity resonances with J 1-, 2-, 3-, 4- and 5- are newly calculated.
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U2 - 10.1088/1742-6596/569/1/012070
DO - 10.1088/1742-6596/569/1/012070
M3 - Conference article
AN - SCOPUS:84919459705
SN - 1742-6588
VL - 569
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012070
T2 - 3rd International Workshop on State of the Art in Nuclear Cluster Physics, SOTANCP 2014
Y2 - 26 May 2014 through 30 May 2014
ER -