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@ARTICLE{Adlarson:841541,
      author       = {Adlarson, P. and Augustyniak, W. and Bardan, W. and
                      Bashkanov, M. and Bass, S. D. and Bergmann, F. S. and
                      Berlowski, M. and Bondar, A. and Buscher, M. and Calen, H.
                      and Ciepal, I. and Clement, H. and Czerwinski, E. and
                      Demmich, K. and Engels, Ralf W. and Erven, A. and Erven, W.
                      and Eyrich, W. and Fedorets, P. and Fohl, K. and Fransson,
                      K. and Goldenbaum, F. and Goswami, A. and Grigoryev, K. and
                      Gullstrom, C. -O. and Heijkenskjold, L. and Hejny, V. and
                      Husken, N. and Jarczyk, L. and Johansson, T. and Kamys, B.
                      and Kemmerling, G. and Khatri, G. and Khoukaz, A. and
                      Khreptak, O. and Kirillov, D. A. and Kistryn, S. and
                      Kleines, H. and Klos, B. and Krzemien, W. and Kulessa, P.
                      and Kupsc, A. and Kuzmin, A. and Lalwani, K. and Lersch, D.
                      and Lorentz, B. and Magiera, A. and Maier, R. and
                      Marciniewski, P. and Marianski, B. and Morsch, H. -P. and
                      Moskal, P. and Ohm, H. and Parol, W. and del Rio, E. Perez
                      and Piskunov, N. M. and Prasuhn, D. and Pszczel, D. and
                      Pysz, K. and Pyszniak, A. and Ritman, J. and Roy, A. and
                      Rudy, Z. and Rundel, O. and Sawant, S. and Schadmand, S. and
                      Schatti-Ozerianska, I. and Sefzick, T. and Serdyuk, V. and
                      Shwartz, B. and Sitterberg, K. and Skorodko, T. and Skurzok,
                      M. and Smyrski, J. and Sopov, V. and Stassen, R. and
                      Stepaniak, J. and Stephan, E. and Sterzenbach, G. and
                      Stockhorst, H. and Szczurek, H. Stroher A. and Trzcinski, A.
                      and Wolke, M. and Wronska, A. and Wustner, P. and Yamamoto,
                      A. and Zabierowski, J. and Zielinski, M. J. and Zlomanczuk,
                      J. and Zupranski, P. and Zurek, M.},
      title        = {{S}pin dependence of ${\eta}$ meson production in
                      proton-proton collisions close to threshold},
      reportid     = {FZJ-2017-08585},
      year         = {2017},
      note         = {Accepted for publication in Phys. Rev. Lett},
      abstract     = {Taking advantage of the high acceptance and axial symmetry
                      of the WASA-at-COSY detector, and the high degree of the
                      polarized proton beam of COSY, the reaction $pp{\to}$
                      $pp{\eta}$ has been measured close to threshold to explore
                      the analyzing power Ay. The angular distribution of Ay is
                      determined with the precision improved by more than one
                      order of magnitude with respect to previous results allowing
                      a first accurate comparison with theoretical predictions.
                      The determined analyzing power is consistent with zero for
                      an excess energy of Q = 15 MeV signaling s wave production
                      with no evidence for higher partial waves. At Q = 72 MeV the
                      data reveals strong interference of P s and P p partial
                      waves and cancellation of (P p) and Ss*Sd contributions.
                      These results rule out the presently available theoretical
                      predictions for the production mechanism of the ${\eta}$
                      meson.},
      cin          = {IKP-1 / IKP-TA / IKP-2 / IKP-4 / PGI-6 / JCNS (München) ;
                      Jülich Centre for Neutron Science JCNS (München) ;
                      JCNS-FRM-II / ZEA-2},
      cid          = {I:(DE-Juel1)IKP-1-20111104 / I:(DE-Juel1)IKP-TA-20111104 /
                      I:(DE-Juel1)IKP-2-20111104 / I:(DE-Juel1)IKP-4-20111104 /
                      I:(DE-Juel1)PGI-6-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)ZEA-2-20090406},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF3-612)},
      pid          = {G:(DE-HGF)POF3-612},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {1709.04547},
      howpublished = {arXiv:1709.04547},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1709.04547;\%\%$},
      pubmed       = {pmid:29376676},
      url          = {https://juser.fz-juelich.de/record/841541},
}