A feasibility study of the time reversal violation test based on polarization of annihilation photons from the decay of ortho-Positronium with the J-PET detector

TL;DR

This paper explores the feasibility of testing time reversal symmetry violation using polarization measurements of annihilation photons from ortho-Positronium decay with the innovative J-PET detector, which can measure photon polarization and momenta.

Contribution

It introduces the potential of the J-PET detector for conducting symmetry violation tests in positronium decay, leveraging its unique polarization measurement capabilities.

Findings

J-PET can measure photon polarization and momenta.

Feasibility of detecting time reversal violation with J-PET.

Potential for symmetry tests beyond medical imaging.

Abstract

The Jagiellonian Positron Emission Tomograph (J-PET) is a novel de- vice being developed at Jagiellonian University in Krakow, Poland based on or- ganic scintillators. J-PET is an axially symmetric and high acceptance scanner that can be used as a multi-purpose detector system. It is well suited to pur- sue tests of discrete symmetries in decays of positronium in addition to medical imaging. J-PET enables the measurement of both momenta and the polarization vectors of annihilation photons. The latter is a unique feature of the J-PET detector which allows the study of time reversal symmetry violation operator which can be constructed solely from the annihilation photons momenta before and after the scattering in the detector.