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@ARTICLE{Gharibyan:437583,
      author       = {Gharibyan, Vahagn},
      title        = {{E}xperimental {H}int for {G}ravitational {CP} {V}iolation},
      journal      = {Modern physics letters / A A},
      volume       = {35},
      number       = {11},
      issn         = {1793-6632},
      address      = {Singapur},
      publisher    = {World Scientific Publ.},
      reportid     = {PUBDB-2020-01621, DESY 16-014},
      pages        = {2050079 -},
      year         = {2020},
      abstract     = {An equality of particle and antiparticle gravitational
                      interactions holds in general relativity and is supported by
                      indirect observations. Gravity dependence on rotation or
                      spin direction is experimentally constrained for
                      non-relativistic matter. Here, a method based on high-energy
                      Compton scattering is developed to measure the gravitational
                      interaction of accelerated charged particles. Within that
                      formalism, the Compton spectra measured at HERA rule out the
                      speculated anti-gravity possibility for antimatter at a
                      confidence level close to $100\%.$ The same data, however,
                      imply a gravitational CP violation around 13 GeV energies,
                      by a maximal amount of (9±2)⋅10−12 for the charge and
                      (13±3)⋅10−12 for the space parity. The detected
                      asymmetry hints for a stronger gravitational coupling to
                      left helicity electrons relative to right helicity
                      positrons.},
      keywords     = {gravitation: interaction (INSPIRE) / gravitation: coupling
                      (INSPIRE) / energy: high (INSPIRE) / energy: low (INSPIRE) /
                      electron: helicity (INSPIRE) / CP: violation (INSPIRE) /
                      asymmetry: CP (INSPIRE) / positron (INSPIRE) / Compton
                      scattering (INSPIRE) / general relativity (INSPIRE) /
                      charged particle (INSPIRE) / antigravitation (INSPIRE) /
                      DESY HERA Stor (INSPIRE) / antiparticle (INSPIRE) / rotation
                      (INSPIRE) / parity (INSPIRE) / spin: dependence (INSPIRE) /
                      interpretation of experiments (INSPIRE) / experimental
                      results (INSPIRE)},
      cin          = {MDI 2},
      ddc          = {530},
      cid          = {$I:(DE-H253)MDI_2-20120731$},
      pnm          = {631 - Accelerator R $\&$ D (POF3-631)},
      pid          = {G:(DE-HGF)POF3-631},
      experiment   = {EXP:(DE-H253)HERA(machine)-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000526052300007},
      doi          = {10.1142/S0217732320500790},
      url          = {https://bib-pubdb1.desy.de/record/437583},
}