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- Title
Sensitivity of Discrete Symmetry Tests in the Positronium System with the J-PET Detector.
- Authors
Gajos, Aleksander
- Abstract
Study of certain angular correlations in the three-photon annihilations of the triplet state of positronium, the electron–positron bound state, may be used as a probe of potential CP and CPT-violating effects in the leptonic sector. We present the perspectives of CP and CPT tests using this process recorded with a novel detection system for photons in the positron annihilation energy range, the Jagiellonian Positron Emission Tomography (J-PET). We demonstrate the capability of this system to register three-photon annihilations with an unprecedented range of kinematical configurations and to measure the CPT-odd correlation between positronium spin and annihilation plane orientation with a precision improved by at least an order of magnitude with respect to present results. We also discuss the means to control and reduce detector asymmetries in order to allow J-PET to set the first measurement of the correlation between positronium spin and momentum of the most energetic annihilation photon which has never been studied to date.
- Subjects
POSITRONIUM; DISCRETE symmetries; TEST systems; POSITRON emission tomography; POSITRON annihilation; BOUND states
- Publication
Symmetry (20738994), 2020, Vol 12, Issue 8, p1268
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym12081268