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Determination of the η(')-proton scattering length in free space.
Czerwinski, E; Moskal, P; Silarski, M; Bass, S D; Grzonka, D; Kamys, B; Khoukaz, A; Klaja, J; Krzemien, W; Oelert, W; Ritman, J; Sefzick, T; Smyrski, J; Täschner, A; Wolke, M; Zielinski, M.
Affiliation
  • Czerwinski E; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Moskal P; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Silarski M; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Bass SD; Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, A 1090 Vienna, Austria.
  • Grzonka D; Institute for Nuclear Physics and Jülich Center for Hadron Physics, Research Center Jülich, D-52425 Jülich, Germany.
  • Kamys B; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Khoukaz A; IKP, Westfälische Wilhelms-Universität, D-48149 Münster, Germany.
  • Klaja J; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Krzemien W; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Oelert W; Johannes Gutenberg-Universität Mainz, 550099 Mainz, Germany.
  • Ritman J; Institute for Nuclear Physics and Jülich Center for Hadron Physics, Research Center Jülich, D-52425 Jülich, Germany.
  • Sefzick T; Institute for Nuclear Physics and Jülich Center for Hadron Physics, Research Center Jülich, D-52425 Jülich, Germany.
  • Smyrski J; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
  • Täschner A; IKP, Westfälische Wilhelms-Universität, D-48149 Münster, Germany.
  • Wolke M; Department of Physics and Astronomy, Uppsala University, SE-751 20 Uppsala, Sweden.
  • Zielinski M; Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland.
Phys Rev Lett ; 113(6): 062004, 2014 Aug 08.
Article in En | MEDLINE | ID: mdl-25148320
ABSTRACT
Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton beam of the cooler synchrotron COSY, we determine the excitation function for the pp→ppη(') reaction close to threshold. Combining these data with previous results, we extract the scattering length for the η(')-proton potential in free space to be Re(a(pη(')))=0±0.43 fm and Im(a(pη(')))=0.37(-0.16)(+0.40) fm.
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2014 Document type: Article
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2014 Document type: Article