Positronium decay events can be used to test violation of fundamental symmetries. Here, the authors use events in the J-PET to improve existing limits on P, T and CP invariance in positronium decays, thanks to a method that does not require to measure the positronium spin but determining polarization of the annihilation photons instead.
- Paweł Moskal
- Eryk Czerwiński
- Wojciech Wiślicki
