UP - logo
E-viri
Celotno besedilo
Odprti dostop
  • An Isotensor Dibaryon in the $pp \to pp\pi^+\pi^-$ Reaction?
    Adlarson, P; Augustyniak, W; Bardan, W; Bashkanov, M; Bergmann, F. S; Berłowski, M; Bondar, A; Büscher, M; Calén, H; Ciepał, I; Clement, H; Czerwiński, E; Demmich, K; Engels, R; Erven, A; Erven, W; Eyrich, W; Fedorets, P; Föhl, K; Fransson, K; Goldenbaum, F; Goswami, A; Grigoryev, K; Heijkenskjöld, L; Hejny, V; Hüsken, N; Jarczyk, L; Johansson, T; Kamys, B; Kemmerling, G; Khoukaz, A; Khreptak, O; Kirillov, D. A; Kistryn, S; Kleines, H; Kłos, B; Krzemień, W; Kulessa, P; Kupść, A; Lalwani, K; Lersch, D; Lorentz, B; Magiera, A; Marciniewski, P; Mariański, B; Morsch, H. --P; Moskal, P; Ohm, H; Parol, W; del Rio, E. Perez; Piskunov, N. M; Prasuhn, D; Pszczel, D; Pysz, K; Ritman, J; Roy, A; Rudy, Z; Rundel, O; Sawant, S; Schadmand, S; Schätti--Ozerianska, I; Sefzick, T; Serdyuk, V; Shwartz, B; Skorodko, T; Skurzok, M; Smyrski, J; Sopov, V; Stassen, R; Stepaniak, J; Stephan, E; Sterzenbach, G; Stockhorst, H; Ströher, H; Szczurek, A; Trzciński, A; Wolke, M; Wrońska, A; Wüstner, P; Yamamoto, A; Zabierowski, J; Zieliński, M. J; Żuprański, P; Żurek, M

    03/2018
    Journal Article

    Phys. Rev. Lett. 121, 052001 (2018) Exclusive measurements of the quasi-free $pp \to pp\pi^+\pi^-$ reaction have been carried out at WASA@COSY by means of $pd$ collisions at $T_p$ = 1.2 GeV. Total and differential cross sections have been extracted covering the energy region $T_p = 1.08 - 1.36$ GeV, which is the region of $N^*(1440)$ and $\Delta(1232)\Delta(1232)$ resonance excitations. Calculations describing these excitations by $t$-channel meson exchange are at variance with the measured differential cross sections and underpredict substantially the experimental total cross section. An isotensor $\Delta N$ dibaryon resonance with $I(J^P) = 2(1^+)$ produced associatedly with a pion is able to overcome these deficiencies.

Vnos na polico