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@INPROCEEDINGS{Zurek:189845,
      author       = {Zurek, Maria},
      title        = {{C}harge {S}ymmetry {B}reaking in the $dd
                      \rightarrow\,^{4}\mathrm{{H}e}\pi^{0}$ {R}eaction with
                      {WASA}-at-{COSY}},
      reportid     = {FZJ-2015-02851},
      year         = {2015},
      abstract     = {Investigations of charge symmetry breaking is one of the
                      key topics for the WASA-at-COSY experiment. The study
                      concentrates on the charge symmetry forbidden $dd
                      \rightarrow\,^{4}\mathrm{He}\pi^{0}$ reaction. The aim is to
                      compare the experimental results with Chiral Perturbation
                      Theory predictions, probing hadronic effects of the up and
                      down quarks mass difference. It was found that previous data
                      taken close to the reaction threshold were consistent with
                      $s$-wave. In order to probe also $p$-wave contributions, new
                      data at sufficiently high energy were required. The
                      measurement should comprise the charge symmetry forbidden
                      $dd \rightarrow\,^{4}\mathrm{He}\pi^{0}$ reaction and the
                      charge symmetry conserving reaction $dd
                      \rightarrow\,^{3}\mathrm{He}n\pi^{0}$ to provide
                      additionally the experimental input for the description of
                      the initial state interactions. Results on the $dd
                      \rightarrow\,^{3}\mathrm{He}n\pi^{0}$ and $dd
                      \rightarrow\,^{4}\mathrm{He}\pi^{0}$ reactions with the WASA
                      detector setup at a beam momentumof 1.2 GeV/$c$ will be
                      presented. In addition, the status of the recent high
                      statistics run in spring 2014 will be discussed.},
      month         = {Mar},
      date          = {2015-03-23},
      organization  = {DPG-Frühjahrstagung Heidelberg 2015,
                       Heidelberg (Germany), 23 Mar 2015 - 27
                       Mar 2015},
      subtyp        = {Other},
      cin          = {IKP-2},
      cid          = {I:(DE-Juel1)IKP-2-20111104},
      pnm          = {631 - Accelerator R $\&$ D (POF3-631)},
      pid          = {G:(DE-HGF)POF3-631},
      experiment   = {EXP:(DE-Juel1)WASA-at-COSY-20170712},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/189845},
}