TY  - EJOUR
AU  - Gharibyan, Vahagn
TI  - Experimental Hint for Gravitational CP Violation
IS  - DESY 16-014
M1  - PUBDB-2016-01182
M1  - DESY 16-014
PY  - 2016
AB  - 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±0.2% for the charge and 0.68±0.09% for the space parity.A stronger gravitational coupling to left helicity electrons relative to right helicity positrons is detected.
LB  - PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
DO  - DOI:10.3204/PUBDB-2016-01182
UR  - https://bib-pubdb1.desy.de/record/295330
ER  -