title: Evidence of soft dipole resonance in ^{11}li with isoscalar character.
abstract: The first conclusive evidence of a dipole resonance in ^{11}Li having isoscalar character observed from inelastic scattering with a novel solid deuteron target is reported. The experiment was performed at the newly commissioned IRIS facility at TRIUMF. The results show a resonance peak at an excitation energy of 1.03±0.03 MeV with a width of 0.51±0.11 MeV (FWHM). The angular distribution is consistent with a dipole excitation in the distorted-wave Born approximation framework. The observed resonance energy together with shell model calculations show the first signature that the monopole tensor interaction is important in ^{11}Li. The first ab initio calculations in the coupled cluster framework are also presented.
authors.affiliation: Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.
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authors.affiliation: Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.|TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: General Education, Faculty of Engineering, Osaka Institute of Technology, Osaka, Osaka 535-8585, Japan.
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authors.affiliation: Department of Physics, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan.
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authors.affiliation: Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada.
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authors.lastname: Chen
authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.|Department of Physics, University of Laval, Quebec City, Quebec G1V 0A8, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.lastname: Gallant
authors.affiliation: Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
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authors.initials: PE
authors.lastname: Garrett
authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
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authors.affiliation: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.|Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.
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authors.affiliation: Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.|Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
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authors.lastname: Krücken
authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Astronomy and Physics Department, Saint Mary's University, Halifax, Nova Scotia B3H 3C3, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Grand Accélérateur National dIons Lourds, CEA/DSM-CNRS/IN2P3, B.P. 55027, F-14076 Caen Cedex 5, France.
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authors.affiliation: RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan.|School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing 100191, China.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.
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authors.affiliation: Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
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authors.affiliation: TRIUMF, Vancouver, British Columbia V6T2A3, Canada.|Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
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