H. Calén¹, I. Ciepał¹⁰, H. Clement^11,12, E. Czerwiński³, K. Demmich⁵, R. Engels¹³, A. Erven¹⁴, W. Eyrich¹⁵, P. Fedorets¹⁶, K. Föhl¹⁷, K. Fransson¹, F. Goldenbaum^13,*, A. Goswami^13,18, K. Grigoryev^13,*, L. Heijkenskjöld^1,†, V. Hejny¹³, L. Jarczyk^3,‡, T. Johansson¹, B. Kamys³, G. Kemmerling^14,§, A. Khoukaz⁵, A. Khreptak³, D. A. Kirillov¹⁹, S. Kistryn³, H. Kleines^14,§, B. Kłos^20,∥, W. Krzemień⁶, P. Kulessa¹⁰, A. Kupść^1,6, K. Lalwani²¹, D. Lersch^13,¶, B. Lorentz^13,*, A. Magiera³, R. Maier¹³, P. Marciniewski¹, B. Mariański^2,‡, H.–P. Morsch², P. Moskal³, W. Parol¹⁰, E. Perez del Rio³, N. M. Piskunov¹⁹, D. Prasuhn¹³, D. Pszczel^1,6, K. Pysz¹⁰, J. Ritman^13,22,*, A. Roy¹⁸, O. Rundel³, S. Sawant²³, S. Schadmand^13,*, T. Sefzick^13,*, V. Serdyuk¹³, B. Shwartz⁷, T. Skorodko^11,12, M. Skurzok^3,**, J. Smyrski³, V. Sopov^16,‡, R. Stassen¹³, J. Stepaniak⁶, E. Stephan²⁰, G. Sterzenbach¹³, H. Stockhorst¹³, H. Ströher¹³, A. Szczurek¹⁰, A. Trzciński^2,‡, M. Wolke¹, A. Wrońska³, P. Wüstner¹⁴, A. Yamamoto²⁴, J. Zabierowski²⁵, M. J. Zieliński³, J. Złomańczuk¹, P. Żuprański², and M. Żurek²⁶ (WASA-at-COSY Collaboration^††)

• ¹Division of Nuclear Physics, Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
• ²Nuclear Physics Division, National Centre for Nuclear Research, ul. Pasteura 7, 02-093 Warsaw, Poland
• ³M. Smoluchowski Institute of Physics, Jagiellonian University, prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
• ⁴School of Physics Engineering and Technology, The University of York, Heslington, York YO10 5DD, United Kingdom
• ⁵Institut für Kernphysik, Westfälische Wilhelms–Universität Münster, Wilhelm–Klemm–Str. 9, 48149 Münster, Germany
• ⁶High Energy Physics Division, National Centre for Nuclear Research, ul. Pasteura 7, 02-093 Warsaw, Poland
• ⁷Budker Institute of Nuclear Physics of SB RAS, 11 Acad. Lavrentieva Pr., Novosibirsk 630090, Russia
• ⁸Peter Grünberg Institut, PGI–6 Elektronische Eigenschaften, Forschungszentrum Jülich, 52425 Jülich, Germany
• ⁹Institut für Laser–und Plasmaphysik, Heinrich Heine Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
• ¹⁰The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland
• ¹¹Physikalisches Institut, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
• ¹²Kepler Center for Astro and Particle Physics, Physikalisches Institut der Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
• ¹³Institut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, Germany
• ¹⁴Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, 52425 Jülich, Germany
• ¹⁵Physikalisches Institut, Friedrich–Alexander Universität Erlangen–Nürnberg, Erwin–Rommel-Str. 1, 91058 Erlangen, Germany
• ¹⁶National Research Centre “Kurchatov Institute,” Moscow 123182, Russia
• ¹⁷II. Physikalisches Institut, Justus–Liebig–Universität Gießen, Heinrich–Buff–Ring 16, 35392 Giessen, Germany
• ¹⁸Discipline of Physics, Indian Institute of Technology Indore, Khandwa Road, Indore, Madhya Pradesh 453552, India
• ¹⁹Veksler and Baldin Laboratory of High Energiy Physics, Joint Institute for Nuclear Physics, 6 Joliot–Curie, Dubna 141980, Russia
• ²⁰August Chełkowski Institute of Physics, University of Silesia, ul. 75 Pułku Piechoty 1, 41-500 Chorzów, Poland
• ²¹Department of Physics, Malaviya National Institute of Technology Jaipur, JLN Marg, Jaipur, Rajasthan 302017, India
• ²²Institut für Experimentalphysik I, Ruhr–Universität Bochum, Universitätsstr. 150, 44780 Bochum, Germany
• ²³Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
• ²⁴High Energy Accelerator Research Organisation KEK, Tsukuba, Ibaraki 305–0801, Japan
• ²⁵Astrophysics Division, National Centre for Nuclear Research, Box 447, 90-950 Łódź, Poland
• ²⁶Physics Division, Argonne National Laboratory, 9700 S Cass Ave, Lemont, Illinois 60439, USA
• ²⁷Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio al. 3, LT-10257 Vilnius, Lithuania
• ²⁸Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk, PL-80308 Gdańsk, Poland
• ²⁹Institute for Theoretical Physics, Leibniz University Hannover, D-30167 Hannover, Germany
• ³⁰Faculty of Physics, University of Warsaw, PL-02093 Warszawa, Poland

• ^*Present address: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany.
• ^†Present address: Institut für Kernphysik, Johannes Gutenberg Universität Mainz, Johann–Joachim–Becher Weg 45, 55128 Mainz, Germany.
• ^‡Deceased.
• ^§Present address: Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich, 52428 Jülich, Germany.
• ^∥Contact author: barbara.klos@us.edu.pl
• ^¶Present address: Department of Physics, Florida State University, 77 Chieftan Way, Tallahassee, FL 32306-4350, USA.
• ^**Present address: INFN, Laboratori Nazionali di Frascati, Via E. Fermi, 40, 00044 Frascati (Roma), Italy.
• ^††The author list reflects the once-existing composition of the WASA-at-COSY Collaboration, within which the data presented in this paper have been obtained.