%0 Journal Article
%A Adlarson, P.
%A Augustyniak, W.
%A Bardan, W.
%A Bashkanov, M.
%A Bednarski, T.
%A Bergmann, F. S.
%A Berłowski, M.
%A Bhatt, H.
%A Büscher, M.
%A Calén, H.
%A Clement, H.
%A Coderre, D.
%A Czerwiński, E.
%A Demmich, K.
%A Doroshkevich, E.
%A Erven, W.
%A Eyrich, W.
%A Fedorets, P.
%A Föhl, K.
%A Fransson, K.
%A Goldenbaum, F.
%A Goslawski, P.
%A Goswami, A.
%A Grigoryev, K.
%A Gullström, C. –O.
%A Hauenstein, F.
%A Heijkenskjöld, L.
%A Hejny, V.
%A Hinterberger, F.
%A Hodana, M.
%A Höistad, B.
%A Jany, A.
%A Jany, B. R.
%A Jarczyk, L.
%A Johansson, T.
%A Kamys, B.
%A Kemmerling, G.
%A Khan, F. A.
%A Khoukaz, A.
%A Kistryn, S.
%A Klaja, J.
%A Kleines, H.
%A Kłos, B.
%A Krapp, M.
%A Krzemień, W.
%A Kulessa, P.
%A Kupść, A.
%A Lalwani, K.
%A Lersch, D.
%A Li, L.
%A Lorentz, B.
%A Magiera, A.
%A Maier, R.
%A Marciniewski, P.
%A Mariański, B.
%A Mikirtychiants, M.
%A Morsch, H. –P.
%A Moskal, P.
%A Nandi, B. K.
%A Niedźwiecki, S.
%A Ohm, H.
%A Ozerianska, I.
%A Perez del Rio, E.
%A Pluciński, P.
%A Podkopał, P.
%A Prasuhn, D.
%A Pricking, A.
%A Pszczel, D.
%A Pysz, K.
%A Pyszniak, A.
%A Redmer, C. F.
%A Ritman, J.
%A Roy, A.
%A Rudy, Z.
%A Sawant, S.
%A Schadmand, S.
%A Schmidt, A.
%A Sefzick, T.
%A Serdyuk, V.
%A Shah, N.
%A Siemaszko, M.
%A Siudak, R.
%A Skorodko, T.
%A Skurzok, M.
%A Smyrski, J.
%A Sopov, V.
%A Stassen, R.
%A Stepaniak, J.
%A Stephan, E.
%A Sterzenbach, G.
%A Stockhorst, H.
%A Szczurek, A.
%A Tolba, T.
%A Trzciński, A.
%A Varma, R.
%A Vlasov, P.
%A Wagner, G. J.
%A Węglorz, W.
%A Wolke, M.
%A Wrońska, A.
%A Wüstner, P.
%A Wurm, P.
%A Yamamoto, A.
%A Yuan, X.
%A Yurev, L.
%A Zabierowski, J.
%A Zheng, C.
%A Zieliński, M. J.
%A Zipper, W.
%A Złomańczuk, J.
%A Żuprański, P.
%A Żurek, M.
%A Engels, Ralf W.
%A Stroeher, Hans
%T Search for η-mesic ^{4}He with the WASA-at-COSY detector
%J Physical review / C
%V 87
%N 3
%@ 0556-2813
%C Woodbury, NY
%I Inst.
%M FZJ-2013-04276
%P 035204
%D 2013
%Z 8 pages, 9 figures
%X An exclusive measurement of the excitation function for the dd->3Heppi- reaction was performed at the Cooler Synchrotron COSY-Juelich with the WASA-at-COSY detection system. The data were taken during a slow acceleration of the beam from 2.185 GeV/c to 2.400 GeV/c crossing the kinematic threshold for the eta meson production in the dd->4He-eta reaction at 2.336 GeV/c. The corresponding excess energy with respect to the 4He-eta system varied from -51.4MeV to 22MeV. The integrated luminosity in the experiment was determined using the dd->3Hen reaction. The shape of the excitation function for the dd->3Heppi- was examined. No signal of the 4He-eta bound state was observed. An upper limit for the cross-section for the bound state formation and decay in the process dd->(4He-eta)bound->3Heppi- was determined on the 90% confidence level and it varies from 20nb to 27nb for the bound state width ranging from 5MeV to 35MeV, respectively.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000316105300002
%R 10.1103/PhysRevC.87.035204
%U https://juser.fz-juelich.de/record/137975