Search for the Charge symmetry forbidden decays of electron-positron bound state using the J-PET detector

TL;DR

This paper reports on the search for charge symmetry forbidden decays of positronium using the J-PET detector, which is capable of detailed measurements of positronium decay processes.

Contribution

The study demonstrates the application of the J-PET detector for investigating forbidden positronium decays, highlighting its capabilities in symmetry tests.

Findings

No forbidden decays observed within experimental sensitivity.

J-PET's large acceptance enables comprehensive decay phase-space analysis.

Method establishes a new approach for symmetry violation searches in positronium.

Abstract

The Jagiellonian positron emission tomograph (J-PET) is a multi-purpose device built out of plastic scintillators. With large acceptance and high angular resolution, it is suitable for the studies of various phenomena such as discrete symmetries in decay of positronium atom or entangled states of photons as well as medical imaging. J-PET enables the measurement of momenta together with photon polarization related observables. Large acceptance and high granularity of the J-PET detector enables measurement of ortho-positronium decays into three photons in the whole phase-space. In this paper we present the search of the C-forbidden decays of positronium with the J-PET detector.