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@ARTICLE{Diehl:321028,
      author       = {Diehl, M. and Kroll, P. and Vogt, C.},
      title        = {{T}he {A}nnihilation of virtual photons into pseudoscalar
                      mesons},
      journal      = {The European physical journal / C},
      volume       = {22},
      number       = {3},
      issn         = {1434-6044},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PUBDB-2017-02298, hep-ph/0108220. WU-B-01-03. DESY-01-118},
      pages        = {439 - 450},
      year         = {2001},
      note         = {Theorie},
      abstract     = {We investigate the possibility to constrain the pion
                      distribution amplitude from the gamma* gamma* -> pi
                      transition. For a surprisingly large range in the two photon
                      virtualities we find that the transition form factor is
                      essentially independent of the distribution amplitude. This
                      in turn entails a parameter-free prediction of QCD. The
                      gamma* gamma* -> eta, eta' form factors are also briefly
                      discussed. We estimate that experimental studies might be
                      feasible at the existing e+ e- experiments BaBar, Belle, and
                      CLEO.},
      keywords     = {electron positron: inelastic scattering (INSPIRE) /
                      exchange: two-photon (INSPIRE) / photon photon: interaction
                      (INSPIRE) / photon: off-shell (INSPIRE) / photon: on-shell
                      (INSPIRE) / pseudoscalar meson: photoproduction (INSPIRE) /
                      pi (INSPIRE) / eta (INSPIRE) / eta(958) (INSPIRE) / form
                      factor: transition (INSPIRE) / quantum chromodynamics
                      (INSPIRE) / Feynman graph (INSPIRE) / differential cross
                      section: momentum transfer (INSPIRE) / numerical
                      calculations (INSPIRE)},
      cin          = {DESY(-2012)},
      ddc          = {530},
      cid          = {$I:(DE-H253)DESY_-2012_-20170516$},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      UT           = {WOS:000173172600005},
      doi          = {10.1007/s100520100830},
      url          = {https://bib-pubdb1.desy.de/record/321028},
}