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@ARTICLE{Gharibyan:295330,
      author       = {Gharibyan, Vahagn},
      title        = {{E}xperimental {H}int for {G}ravitational {CP} {V}iolation},
      reportid     = {PUBDB-2016-01182, DESY 16-014},
      year         = {2016},
      abstract     = {An equality of particle and antiparticle gravitational
                      interactionsholds in general relativity and is supported by
                      indirect observations. Gravity dependence on rotation or
                      spin directionis experimentally constrained only at low
                      energies.Here a method based on high energy Compton
                      scattering is developedto measure the gravitational
                      interaction of accelerated charged particles.Within that
                      formalism the Compton spectra measured at HERA rule out the
                      positron's anti-gravity and hint for a gravitationalCP
                      violation around 13 GeV energies, at a maximal level of
                      $1.3\pm0.2\\%$ for the charge and $0.68\pm0.09\\%$ for the
                      space parity.A stronger gravitational coupling to left
                      helicity electrons relative to right helicity positrons is
                      detected.},
      cin          = {MDI 2},
      cid          = {$I:(DE-H253)MDI_2-20120731$},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-H253)HERA(machine)-20150101},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)29},
      doi          = {10.3204/PUBDB-2016-01182},
      url          = {https://bib-pubdb1.desy.de/record/295330},
}