TY - JOUR
T1 - Borromean Feshbach resonance in 11Li studied via 11Li(p,p)
AU - Matsumoto, Takuma
AU - Tanaka, Junki
AU - Ogata, Kazuyuki
N1 - Funding Information:
The authors are grateful to Prof. I. Tanihata and Prof. N. Aoi for fruitful discussions. J.T. gratefully acknowledges the support by the Hirao Taro Foundation of the Konan University Association for Academic Research. This work has been supported in part by Grants-in-Aid of the Japan Society for the Promotion of Science (Grants Nos. JP16K05352 and JP18K03650).
Publisher Copyright:
© 2019 The Author(s) 2019. Published by Oxford University Press on behalf of the Physical Society of Japan.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - A dipole resonance of 11Li is found by a 9Li + n + n three-body model analysis with the complexscaling method. The resonance can be interpreted as a bound state in the 10Li + n system, i.e., a Feshbach resonance in the 9Li + n + n system. As a characteristic feature of the Feshbach resonance of 11Li, the 10Li + n threshold is open above the 9Li + n + n one, which reflects a distinctive property of the Borromean system.A microscopic four-body reaction calculation for the 11Li(p,p) reaction at 6 MeV/nucleon is performed by taking into account the resonant and nonresonant continuum states of the three-body system. The calculation of angular distributions of the elastic and inelastic scattering as well as the energy spectrum reproduced a recent experimental result. Furthermore, the E1 strength distribution from a Coulomb dissociation experiment was also reproduced in this framework. This means that the existence of the Borromean Feshbach resonance may consistently answer a long-standing open question of an excited state of 11Li.
AB - A dipole resonance of 11Li is found by a 9Li + n + n three-body model analysis with the complexscaling method. The resonance can be interpreted as a bound state in the 10Li + n system, i.e., a Feshbach resonance in the 9Li + n + n system. As a characteristic feature of the Feshbach resonance of 11Li, the 10Li + n threshold is open above the 9Li + n + n one, which reflects a distinctive property of the Borromean system.A microscopic four-body reaction calculation for the 11Li(p,p) reaction at 6 MeV/nucleon is performed by taking into account the resonant and nonresonant continuum states of the three-body system. The calculation of angular distributions of the elastic and inelastic scattering as well as the energy spectrum reproduced a recent experimental result. Furthermore, the E1 strength distribution from a Coulomb dissociation experiment was also reproduced in this framework. This means that the existence of the Borromean Feshbach resonance may consistently answer a long-standing open question of an excited state of 11Li.
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U2 - 10.1093/ptep/ptz126
DO - 10.1093/ptep/ptz126
M3 - Article
AN - SCOPUS:85084326513
SN - 2050-3911
VL - 2019
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
IS - 12
M1 - 123D02
ER -