Charge symmetry breaking in $dd\to {}^{4}\mathrm{He}{\pi }^{0}$ with WASA-at-COSY

Adlarson, P.; Klos, B.; Clement, H.; Kistryn, S.; Hüsken, N.; Augustyniak, W.; Piskunov, N. M.; Kupsc, Andrzej; Skorodko, T.; Doroshkevich, E.; Wronska, A.; Höistad, B.; Goswami, Ankita; Stassen, Rolf; Erven, Wilhelm; Hauenstein, Florian; Calen, H.; Zink, A.; Lorentz, Bernd; Shwartz, B.; Mikirtychyants, Maxim; Yurev, Leonid; Varma, R.; Lersch, Daniel; Siudak, R.; Ohm, Henner; Pysz, K.; Marianski, B.; Smyrski, J.; Kemmerling, Günter; Goslawski, P.; Engels, Ralf W.; Zupranski, P.; Sterzenbach, Guenter; Magiera, A.; Föhl, K.; Ciepal, I.; Eyrich, W.; Grigoryev, Kirill; Yamamoto, A.; Kulessa, Pawel; Krzemien, W.; Pricking, A.; Jarczyk, L.; Khan, Farha Anjum; Kamys, B.; Kleines, Harald; Goldenbaum, Frank; Wüstner, Peter; Demmich, K.; Büscher, Markus; Gullström, C.-O.; Bardan, W.; Johansson, T.; Schadmand, Susan; Ozerianska, I.; Sawant, S.; Stepaniak, J.; Zlomanczuk, J.; Ritman, James; Bashkanov, M.; Sopov, V.; Hejny, Volker; Moskal, Pawel; Zurek, Maria; Bhatt, H.; Rudy, Z.; Serdyuk, Valeriy; Sefzick, Thomas; Bergmann, F. S.; Fransson, K.; Erven, Andreas; Prasuhn, Dieter; Czerwinski, E.; Pyszniak, A.; Wurm, Patrick; Perez del Rio, E.; Skurzok, M.; Bondar, A.; Hanhart, Christoph; Khoukaz, A.; Szczurek, A.; Maier, Rudolf; Stockhorst, Hans; Zabierowski, J.; Täschner, A.; Pszczel, D.; Stroeher, Hans; Stephan, E.; Morsch, H.-P.; Lalwani, K.; Zielinski, M. J.; Kuzmin, A.; Fedorets, Pavel; Kirillov, D. A.; Berlowski, M.; Podkopal, P.; Heijkenskjöld, L.; Coderre, Daniel; Trzcinski, A.; Wolke, Magnus; Roy, A.; Marciniewski, P.; Redmer, C. F.

doi:10.1016/j.physletb.2014.10.029

Journal Article

FZJ-2014-05532

Charge symmetry breaking in $dd\to {}^{4}\mathrm{He}{\pi }^{0}$ with WASA-at-COSY

Adlarson, P. ; Augustyniak, W. ; Bardan, W. ; Bashkanov, M. ; Bergmann, F. S. ; Berlowski, M. ; Bhatt, H. ; Bondar, A. ; Büscher, M.FZJ* ; Calen, H. ; Ciepal, I. ; Clement, H. ; Coderre, D. ; Czerwinski, E. ; Demmich, K. ; Doroshkevich, E. ; Engels, R. W.FZJ* ; Erven, A.FZJ* ; Erven, W.FZJ* ; Eyrich, W. ; Fedorets, P.FZJ* ; Föhl, K. ; Fransson, K. ; Goldenbaum, F.FZJ* ; Goslawski, P. ; Goswami, A. ; Grigoryev, K.FZJ* ; Gullström, C.-O. ; Hanhart, C.FZJ* ; Hauenstein, F.FZJ* ; Heijkenskjöld, L. ; Hejny, V. (Corresponding Author)FZJ* ; Höistad, B. ; Hüsken, N. ; Jarczyk, L. ; Johansson, T. ; Kamys, B. ; Kemmerling, G.FZJ* ; Khan, F. A.FZJ* ; Khoukaz, A. ; Kirillov, D. A. ; Kistryn, S. ; Kleines, H.FZJ* ; Klos, B. ; Krzemien, W. ; Kulessa, P.FZJ* ; Kupsc, A. ; Kuzmin, A. ; Lalwani, K. ; Lersch, D.FZJ* ; Lorentz, B.FZJ* ; Magiera, A. ; Maier, R.FZJ* ; Marciniewski, P. ; Marianski, B. ; Mikirtychyants, M.FZJ* ; Morsch, H.-P. ; Moskal, P.FZJ* ; Ohm, H.FZJ* ; Ozerianska, I. ; Perez del Rio, E. ; Piskunov, N. M. ; Podkopal, P. ; Prasuhn, D.FZJ* ; Pricking, A. ; Pszczel, D. ; Pysz, K. ; Pyszniak, A. ; Redmer, C. F. ; Ritman, J.FZJ* ; Roy, A. ; Rudy, Z. ; Sawant, S. ; Schadmand, S.FZJ* ; Sefzick, T.FZJ* ; Serdyuk, V.FZJ* ; Shwartz, B. ; Siudak, R. ; Skorodko, T. ; Skurzok, M. ; Smyrski, J. ; Sopov, V. ; Stassen, R.FZJ* ; Stepaniak, J. ; Stephan, E. ; Sterzenbach, G.FZJ* ; Stockhorst, H.FZJ* ; Stroeher, H.FZJ* ; Szczurek, A. ; Täschner, A. ; Trzcinski, A. ; Varma, R. ; Wolke, M. ; Wronska, A. ; Wüstner, P.FZJ* ; Wurm, P. ; Yamamoto, A. ; Yurev, L. ; Zabierowski, J. ; Zielinski, M. J. ; Zink, A. ; Zlomanczuk, J. ; Zupranski, P. ; Zurek, M.FZJ*

2014
North-Holland Publ. Amsterdam

Physics letters / B 739, 44 - 49 (2014) [10.1016/j.physletb.2014.10.029]

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Please use a persistent id in citations: http://hdl.handle.net/2128/8227 doi:10.1016/j.physletb.2014.10.029

Abstract: Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUMF and IUCF are currently used to develop a consistent description of CSB within the framework of chiral perturbation theory. In this work the experimental studies on the reaction View the MathML sourcedd→He4π0 have been extended towards higher excess energies in order to provide information on the contribution of p -waves in the final state. For this, an exclusive measurement has been carried out at a beam momentum of pd=1.2 GeV/cpd=1.2 GeV/c using the WASA-at-COSY facility. The total cross section amounts to σtot=(118±18stat±13sys±8ext) pbσtot=(118±18stat±13sys±8ext) pb and first data on the differential cross section are consistent with s-wave pion production.

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