High-resolution study of Gamow-Teller excitations in the 42 Ca ( 3 He , t ) 42 Sc reaction and the observation of a “ low-energy super-Gamow-Teller state ”

Y. Fujita,1,2,* H. Fujita,1,2 T. Adachi,1 G. Susoy,1,3 A. Algora,4,5 C. L. Bai,6 G. Colò,7 M. Csatlós,5 J. M. Deaven,8,9,10 E. Estevez-Aguado,4 C. J. Guess,8,9,10,† J. Gulyás,5 K. Hatanaka,1 K. Hirota,1 M. Honma,11 D. Ishikawa,1 A. Krasznahorkay,5 H. Matsubara,1,‡ R. Meharchand,8,9,10,§ F. Molina,4,‖ H. Nakada,12 H. Okamura,1,¶ H. J. Ong,1 T. Otsuka,13 G. Perdikakis,8,14 B. Rubio,4 H. Sagawa,15,16 P. Sarriguren,17 C. Scholl,18,# Y. Shimbara,19 E. J. Stephenson,20 T. Suzuki,1 A. Tamii,1 J. H. Thies,21 K. Yoshida,22 R. G. T. Zegers,8,9,10 and J. Zenihiro1,** 1Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan 2Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan 3Department of Physics, Istanbul University, Istanbul 34134, Turkey 4Instituto de Fı́sica Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain 5Institute of Nuclear Research (ATOMKI), H-4001 Debrecen, Post Office Box 51, Hungary 6Department of Physics, Sichuan University, Chengdu 610065, China 7Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133 Milan, Italy 8National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA 9Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA 10Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA 11Center for Mathematical Science, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan 12Department of Physics, Chiba University, Inage, Chiba 263-8522, Japan 13Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan 14Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA 15Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan 16RIKEN, Nishina Center, Wako Saitama 351-0198, Japan 17Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid, Spain 18Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany 19CYRIC, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan 20Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47408, USA 21Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany 22Graduate School of Science and Technology, Niigata University, Niigata 950-0913, Japan