1. Backward single-pion production in the $ pd\rightarrow {}^{3}\mathrm{He} \pi^{0}$ p d → 3 He π 0 reaction with WASA-at-COSY
- Author
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Günter Kemmerling, Izabela Ciepał, A. Trzcinski, Aleksandra Wrońska, E. Perez del Rio, Hans Calén, Hans Stockhorst, W. Eyrich, Wojciech Krzemien, R. Maier, H. Ohm, D. Lersch, Rolf Stassen, N. Hüsken, Kjell Fransson, Jozef Zlomanczuk, K. Lalwani, G. Sterzenbach, P. Kulessa, Stanisław Kistryn, B. Lorentz, C. Wilkin, H. Clement, Lena Heijkenskjöld, Pawel Marciniewski, Ralf Engels, D. Prasuhn, Frank Goldenbaum, Oleksandr Rundel, B. Mariański, Paweł Moskal, B.A. Shwartz, A. Khoukaz, F. S. Bergmann, J. Zabierowski, Magnus Wolke, Magdalena Skurzok, N.M. Piskunov, T. Johansson, W. Erven, E. Stephan, H. Ströher, K. Föhl, A. Magiera, Antoni Szczurek, A. Kuzmin, Wiktor Parol, P. Żuprański, B. Kłos, D. Pszczel, James Ritman, S. Sawant, I. Schätti-Ozerianska, V. Serdyuk, A. Pyszniak, W. Augustyniak, V. Sopov, Jerzy Smyrski, K. Grigoryev, C.-O. Gullström, Markus Büscher, B. Kamys, M. Bashkanov, V. Hejny, Akira Yamamoto, P. Wüstner, A. Kupść, A. Erven, Marcin Zieliński, L. Jarczyk, W. Bardan, K. Sitterberg, P. Adlarson, A. Goswami, K. Demmich, S. Schadmand, G. Khatri, M. Berłowski, Ankhi Roy, T. Skorodko, T. Sefzick, Zbigniew Rudy, M. Żurek, Eryk Czerwiński, Harald Kleines, K. Pysz, P. Fedorets, J. Stepaniak, H. P. Morsch, Di. Kirillov, A. Khreptak, and A.E. Bondar
- Subjects
Physics ,Nuclear reaction ,Nuclear and High Energy Physics ,Meson ,Proton ,010308 nuclear & particles physics ,Hadron ,Elementary particle ,01 natural sciences ,7. Clean energy ,Nuclear physics ,Pion ,0103 physical sciences ,Production (computer science) ,Nuclear Experiment ,010306 general physics ,Isotopes of helium - Abstract
New data on the production of single neutral pions in the $ pd\rightarrow {}^{3}\mathrm{He} \pi^{0}$ reaction are presented. For fifteen proton beam momenta between $ p_{p}=1.60$ GeV/c and $ p_{p}=1.74$ GeV/c, differential cross sections are determined over a large fraction of the backward hemisphere. Since the only previous systematic measurements of single-pion production at these energies were made in collinear kinematics, the present work constitutes a significant extension of the current knowledge on this reaction. Even this far above the production threshold, significant changes are found in the behaviour of the angular distributions over small intervals in beam momentum.
- Published
- 2018
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