Mirror Matter Searches with the J-PET Detector

E. Pérez del Ríoa, b, W. Krzemieńc, B. Kłósekd,  J-PET Collaboration aFaculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 30-348 Kraków, Poland bCentre for Theranostics, Jagiellonian University, 31-501 Kraków, Poland cHigh Energy Physics Division, National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland dFaculty of Mathematics and Computer Science, Jagiellonian University, 30-348 Kraków, Poland

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The positronium system - a bound state of an electron and a positron - is suitable for testing the predictions of quantum electrodynamics, since its properties can be perturbatively calculated to high accuracy and, unlike the hydrogen system, it is not affected by the finite size or quantum chromodynamics effects at the current level of experimental precision. Experiments searching for invisible decays of the positronium triplet state - the ortho-positronium - which mainly decays to three photons, are being conducted since they are sensitive to new physics scenarios, e.g., mirror matter, milli-charged particles, and extra space-time dimensions. The particular case of mirror matter and its search with the novel total-body positron emission tomography scanner at the Jagiellonian University is presented. This J-PET is a large, high precision medical imaging tool based on plastic scintillators.

DOI:10.12693/APhysPolA.142.386 topics: J-PET (Jagiellonian-positron emission tomography scanner), positronium, dark matter, mirror matter, invisible decays