Towards Time Reversal Symmetry Test with o-Ps Decays using the J-PET detector

TL;DR

This paper discusses a method to identify ortho-Positronium decay using the J-PET detector to test time-reversal symmetry, which is crucial for understanding fundamental physics.

Contribution

The study demonstrates the capability of the J-PET detector to identify ortho-Positronium decay via lifetime measurement, enabling symmetry tests.

Findings

Successful identification of ortho-Positronium decay

Measurement of positronium lifetime with J-PET

Potential for time-reversal symmetry tests

Abstract

One of the features of the triplet state of positronium (ortho-Positronium)atoms is its relatively longer lifetime when compared to the singlet states ofpositronium (para-Positronium) atoms. The most probable decay of ortho-Positronium is into three annihilation photons. In order to test the discretesymmetry using the time-reversal symmetry odd-operator, it is importantto identify ortho-Positronium decay. Identification of the decay of ortho-Positronium atoms by measuring the positronium annihilation lifetime withthe Jagiellonian-Positron Emission Tomograph (J-PET) is presented in this article.