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@INPROCEEDINGS{Gotta:276363,
      author       = {Gotta, D. and Amaro, F. D. and Anagnostopoulos, D. F. and
                      Bühler, P. and Gorke, H. and Covita, D. S. and Fuhrmann, H.
                      and Gruber, A. and Hennebach, M. and Hirtl, A. and
                      Ishiwatari, T. and Indelicato, P. and Jensen, T. S. and
                      Bigot, E.-O. Le and Markushin, V. E. and Marton, J. and
                      Nekipelov, M. and Pomerantsev, V. N. and Popov, V. P. and
                      dos Santos, J. M. F. and Schlesser, S. and Schmid, Ph. and
                      Simons, L. M. and Strauch, Th. and Theisen, M. and
                      Trassinelli, M. and Veloso, J. F. C. A. and Zmeskal, J.},
      title        = {{P}ionic hydrogen and friends},
      journal      = {Hyperfine interactions},
      volume       = {234},
      number       = {1-3},
      issn         = {1572-9540},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2015-06821},
      pages        = {105 - 111},
      year         = {2015},
      abstract     = {Pion-nucleon scattering lengths are directly related to the
                      ground-state level shift and broadening in pionic hydrogen
                      as well as to the pionic deuterium level shift. The level
                      broadening in deuterium measures the strength of pion
                      threshold-production in proton-proton reactions. However,
                      collisional processes during the atomic de-excitation
                      cascade considerably complicate the analysis of X-ray line
                      shapes in order to extract the hadronic broadening.
                      Therefore, additionally the purely electromagnetic twin
                      system muonic hydrogen was studied. Results of these
                      experiments performed at PSI by using a high-resolution
                      crystal spectrometer are discussed in the context with a new
                      analysis approach for the hadronic broadening.},
      month         = {Sep},
      date          = {2014-09-15},
      organization  = {International conference on exotic
                       atoms, Vienna (Austria), 15 Sep 2014 -
                       19 Sep 2014},
      cin          = {IKP-2 / ZEA-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IKP-2-20111104 / 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)8 / PUB:(DE-HGF)16},
      UT           = {WOS:000360770800015},
      doi          = {10.1007/s10751-015-1157-5},
      url          = {https://juser.fz-juelich.de/record/276363},
}