Measurement of the pn→ppπ0π− reaction in search for the recently observed resonance structure in dπ0π0 and dπ+π− systems

Adlarson, P.; Gullström, C. -O.; Kamys, B.; Yuan, X.; Grigoryev, K.; Clement, H.; Kistryn, S.; Augustyniak, W.; Złomańczuk, J.; Skorodko, T.; Serdyuk, V.; Doroshkevich, E.; Wurm, P.; Höistad, B.; Schmidt, A.; Hejny, V.; Berłowski, M.; Stassen, R.; Zieliński, M. J.; Hinterberger, F.; Mariański, B.; Tolba, T.; Kłos, B.; Varma, R.; Siudak, R.; Khan, F. A.; Pysz, K.; Jany, B. R.; Erven, W.; Zipper, W.; Pluciński, P.; Mikirtychiants, M.; Lorentz, B.; Kemmerling, Günter; Goldenbaum, F.; Goslawski, P.; Krzemień, W.; Klaja, J.; Wagner, G. J.; Morsch, H. -P.; Magiera, A.; Pyszniak, A.; Föhl, K.; Ciepał, I.; Zheng, C.; Czerwiński, E.; Eyrich, W.; Fedorets, P.; Hodana, M.; Yamamoto, A.; Wrońska, A.; Krapp, M.; Ritman, J.; Jany, A.; Węglorz, W.; Calen, Hans; Moskal, P.; Pricking, A.; Jarczyk, L.; Bergmann, F. S.; Ohm, H.; Engels, R.; Sterzenbach, G.; Demmich, K.; Stephan, E.; Bardan, W.; Johansson, T.; Nandi, B. K.; Sawant, S.; Stepaniak, J.; Maier, R.; Stockhorst, H.; Coderre, D.; Ströher, H.; Büscher, M.; Shah, N.; Bashkanov, M.; Goswami, A.; Sopov, V.; Lersch, D.; Bhatt, H.; Rudy, Z.; Fransson, K.; Podkopał, P.; Kupść, A.; Żuprański, P.; Kleines, H.; Smyrski, J.; Prasuhn, D.; Perez del Rio, E.; Skurzok, M.; Ozerianska, I.; Żurek, M.; Khoukaz, A.; Szczurek, A.; Trzciński, A.; Pszczel, D.; Piskunov, N. M.; Schadmand, S.; Kulessa, P.; Wüstner, P.; Lalwani, K.; Sefzick, T.; Li, L.; Kirillov, D. A.; Heijkenskjöld, L.; Zabierowski, J.; Roy, A.; Siemaszko, M.; Wolke, M.; Marciniewski, P.; Redmer, C. F.; Hauenstein, F.

doi:10.1103/PhysRevC.88.055208

Journal Article

FZJ-2013-05947

Measurement of the pn→ppπ0π− reaction in search for the recently observed resonance structure in dπ0π0 and dπ+π− systems

Adlarson, P. (Corresponding author) ; Augustyniak, W. ; Bardan, W. ; Bashkanov, M. ; Bergmann, F. S. ; Berłowski, M. ; Bhatt, H.Extern* ; Büscher, M.FZJ* ; Calen, H.FZJ* ; Ciepał, I. ; Clement, H. ; Coderre, D.FZJ* ; Czerwiński, E. ; Demmich, K. ; Doroshkevich, E. ; Engels, R.ZEA-2*FZJ* ; Erven, W.ZEA-2*FZJ* ; Eyrich, W. ; Fedorets, P.FZJ* ; Föhl, K. ; Fransson, K. ; Goldenbaum, F.FZJ* ; Goslawski, P. ; Goswami, A.FZJ* ; Grigoryev, K.FZJ* ; Gullström, C. -. ; Hauenstein, F.FZJ* ; Heijkenskjöld, L. ; Hejny, V.FZJ* ; Hinterberger, F. ; Hodana, M. ; Höistad, B. ; Jany, A. ; Jany, B. R. ; Jarczyk, L. ; Johansson, T. ; Kamys, B. ; Kemmerling, G.ZEA-2*FZJ* ; Khan, F. A.FZJ* ; Khoukaz, A. ; Kirillov, D. A. ; Kistryn, S. ; Klaja, J. ; Kleines, H.ZEA-2*FZJ* ; Kłos, B. ; Krapp, M. ; Krzemień, W. ; Kulessa, P.FZJ* ; Kupść, A.FZJ* ; Lalwani, K. ; Lersch, D.FZJ* ; Li, L. ; Lorentz, B.FZJ* ; Magiera, A. ; Maier, R.FZJ* ; Marciniewski, P. ; Mariański, B. ; Mikirtychiants, M. ; Morsch, H. -. ; Moskal, P. ; Nandi, B. K. ; Ohm, H.FZJ* ; Ozerianska, I. ; Perez del Rio, E. ; Piskunov, N. M. ; Pluciński, P. ; Podkopał, P. ; Prasuhn, D.FZJ* ; Pricking, A. ; Pszczel, D. ; Pysz, K. ; Pyszniak, A. ; Redmer, C. F. ; Ritman, J.FZJ* ; Roy, A. ; Rudy, Z. ; Sawant, S. ; Schmidt, A.FZJ* ; Schadmand, S.FZJ* ; Sefzick, T.FZJ* ; Serdyuk, V.FZJ* ; Shah, N.FZJ* ; Siemaszko, M. ; Siudak, R. ; Skorodko, T. ; Skurzok, M. ; Smyrski, J. ; Sopov, V. ; Stassen, R.FZJ* ; Stepaniak, J. ; Stephan, E. ; Sterzenbach, G.FZJ* ; Stockhorst, H.FZJ* ; Ströher, H. ; Szczurek, A. ; Tolba, T. ; Trzciński, A. ; Varma, R. ; Wagner, G. J. ; Węglorz, W. ; Wolke, M.Extern* ; Wrońska, A. ; Wüstner, P. ; Wurm, P.FZJ* ; Yamamoto, A. ; Yuan, X. ; Zabierowski, J. ; Zheng, C. ; Zieliński, M. J. ; Zipper, W. ; Złomańczuk, J. ; Żuprański, P. ; Żurek, M.FZJ*

2013
Inst. Woodbury, NY

Physical review / C 88(5), 055208 (2013) [10.1103/PhysRevC.88.055208]

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Please use a persistent id in citations: http://hdl.handle.net/2128/5648 doi:10.1103/PhysRevC.88.055208

Abstract: Associative photoproduction of $\omega$-meson and $N^{*}(1440)$ on nucleons, $\gamma+N\to\omega+N^{*}(1440)$, in the near threshold region is investigated in a framework employing effective Lagrangians. Besides $\pi$-exchange in t-channel, baryon exchanges, i.e. N- and $N^{*}$-exchanges, in the s- and u-channels are also taken into account in calculations of differential cross-section and beam asymmetry. Important inputs of this model are the vector and tensor coupling constants of $\omega NN^{*}(1440)$-vertex, which are assumed to be equal to the values of these couplings for $\omega NN$ vertex. Using our previous estimation of $\omega NN$ coupling constants obtained from a fit to available experimental data on photoproduction of $\omega$ meson in the near threshold region, we produce the necessary numerical predictions for different observables in $\gamma+N\to\omega+N^{*}(1440)$. Numerical results shows that at low $|$t$|$ dominant contribution comes from t-channel $\pi$-exchange while effects of nucleon and $N^{*}(1440)$ pole terms can be seen at large $|t|$. Our predictions for the differential cross section and beam asymmetry for the processes $\gamma+N\to\omega+N^{*}(1440)$, where N is proton and neutron at $E_{\gamma}=2.5$ GeV are presented with zero width approximation and also with the inclusion of width effects of $N^{*}(1440)$.

Keyword(s): photon nucleon: exclusive reaction ; photon: polarized beam ; N(1440): photoproduction ; omega(783): associated production ; threshold ; effective Lagrangian ; amplitude analysis ; differential cross section: momentum transfer ; spin: asymmetry ; numerical calculations ; photon nucleon --> N(1440) omega(783)