% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Adlarson:826388,
      author       = {Adlarson, P. and Augustyniak, W. and Bardan, W. and
                      Bashkanov, M. and Bergmann, F. S. and Berłowski, M. and
                      Bhatt, H. and Bondar, A. and Büscher, M. and Calén, H. and
                      Ciepał, I. and Clement, H. and Czerwiński, E. and Demmich,
                      K. and Engels, Ralf W. and Erven, A. and Erven, W. and
                      Eyrich, W. and Fedorets, P. and Föhl, K. and Fransson, K.
                      and Goldenbaum, F. and Goswami, A. and Grigoryev, K. and
                      Gullström, C.-O. and Heijkenskjöld, L. and Hejny, V. and
                      Hüsken, N. and Jarczyk, L. and Johansson, T. and Kamys, B.
                      and Kelkar, N. G. and Kemmerling, G. and Khatri, G. and
                      Khoukaz, A. and Khreptak, O. and Kirillov, D. A. and
                      Kistryn, S. and Kleines, H. and Kłos, B. and Krzemień, W.
                      and Kulessa, P. and Kupść, A. and Kuzmin, A. and Lalwani,
                      K. and Lersch, D. and Lorentz, B. and Magiera, A. and Maier,
                      R. and Marciniewski, P. and Mariański, B. and Morsch, H.-P.
                      and Moskal, P. and Ohm, H. and Perez del Rio, E. 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
                      Schätti-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 Stroeher, Hans and Szczurek, A. and
                      Trzciński, A. and Varma, R. and Wolke, M. and Wrońska, A.
                      and Wüstner, P. and Yamamoto, A. and Zabierowski, J. and
                      Zieliński, M. J. and Złomańczuk, J. and Żuprański, P.
                      and Żurek, M.},
      title        = {{S}earch for η-mesic ${}^{4}\text{{H}e}$ in the $dd\to
                      {}^{3}\text{{H}e}n{\pi }^{0}$ and $dd\to
                      {}^{3}\text{{H}e}p{\pi }^{-}$ reactions with the
                      {WASA}-at-{COSY} facility},
      journal      = {Nuclear physics / A},
      volume       = {959},
      issn         = {0375-9474},
      address      = {Amsterdam},
      publisher    = {North-Holland Publ. Co.},
      reportid     = {FZJ-2017-00616},
      pages        = {102 - 115},
      year         = {2017},
      abstract     = {The search for View the MathML sourceHe4-η bound states
                      was performed with the WASA-at-COSY facility via the
                      measurement of the excitation function for the View the
                      MathML sourcedd→He3nπ0 and View the MathML
                      sourcedd→He3pπ− processes. The deuteron beam momentum
                      was varied continuously between 2.127 GeV/c and 2.422 GeV/c,
                      corresponding to the excess energy for the View the MathML
                      sourcedd→He4η reaction ranging from Q=−70 MeVQ=−70
                      MeV to Q=30 MeVQ=30 MeV. The luminosity was determined based
                      on the View the MathML sourcedd→He3n reaction and the
                      quasi-free proton–proton scattering via
                      dd→ppnspectatornspectatordd→ppnspectatornspectator
                      reactions. The excitation functions, determined
                      independently for the measured reactions, do not reveal a
                      structure which could be interpreted as a narrow mesic
                      nucleus. Therefore, the upper limits of the total cross
                      sections for the bound state production and decay in View
                      the MathML sourcedd→(He4-η)bound→He3nπ0 and View the
                      MathML sourcedd→(He4-η)bound→He3pπ− processes were
                      determined taking into account the isospin relation between
                      the both of the considered channels. The results of the
                      analysis depend on the assumptions of the N⁎N⁎(1535)
                      momentum distribution in the anticipated mesic-View the
                      MathML sourceHe4. Assuming, as in the previous works, that
                      this is identical with the distribution of nucleons bound
                      with 20 MeV in View the MathML sourceHe4, we determined that
                      (for the mesic bound state width in the range from 5 MeV to
                      50 MeV) the upper limits at $90\%$ confidence level are
                      about 3 nb and about 6 nb for nπ0nπ0 and pπ−pπ−
                      channels, respectively. However, based on the recent
                      theoretical findings of the N⁎N⁎(1535) momentum
                      distribution in the View the MathML sourceN⁎-He3 nucleus
                      bound by 3.6 MeV, we find that the WASA-at-COSY detector
                      acceptance decreases and hence the corresponding upper
                      limits are 5 nb and 10 nb for nπ0nπ0 and pπ−pπ−
                      channels respectively.},
      cin          = {IKP-1 / IKP-2 / IKP-4 / IKP-TA / ZEA-2 / PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IKP-1-20111104 / I:(DE-Juel1)IKP-2-20111104 /
                      I:(DE-Juel1)IKP-4-20111104 / I:(DE-Juel1)IKP-TA-20111104 /
                      I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)PGI-6-20110106},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF3-612)},
      pid          = {G:(DE-HGF)POF3-612},
      experiment   = {EXP:(DE-Juel1)WASA-at-COSY-20170712},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000395211400007},
      doi          = {10.1016/j.nuclphysa.2017.01.001},
      url          = {https://juser.fz-juelich.de/record/826388},
}