Preprint/Report

PUBDB-2016-01182

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experimental Hint for Gravitational CP Violation

Gharibyan, V. (Corresponding author)DESY*

2016

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Please use a persistent id in citations: doi:10.3204/PUBDB-2016-01182

Report No.: DESY 16-014

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.

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Contributing Institute(s):

1. Strahlinstrumentierungen, Kollimatoren, u.a. (MDI 2)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. Facility (machine) HERA

Appears in the scientific report 2016

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Gharibyan, V. (Corresponding author)DESY*
Experimental Hint for Gravitational CP Violation
Modern physics letters / A A 35(11), 2050079 - (2020) [10.1142/S0217732320500790]2020     Files BibTeX | EndNote: XML, Text | RIS

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