Trilateration-based reconstruction of ortho-positronium decays into three photons with the J-PET detector

Abstract

This work reports on a new reconstruction algorithm allowing to reconstruct the decays of ortho-positronium atoms into three photons using the places and times of photons recorded in the detector. The method is based on trilateration and allows for a simultaneous reconstruction of both location and time of the decay. Results of resolution tests of the new reconstruction in the J-PET detector based on Monte Carlo simulations are presented, which yield a spatial resolution at the level of 2 cm (FWHM) for X and Y and at the level of 1 cm (FWHM) for Z available with the present resolution of J-PET after application of a kinematic fit. Prospects of employment of this method for studying angular correlations of photons in decays of polarized ortho-positronia for the needs of tests of CP and CPT discrete symmetries are also discussed. The new reconstruction method allows for discrimination of background from random three-photon coincidences as well as for application of a novel method for determination of the linear polarization of ortho-positronium atoms, which is also introduced in this work.

arXiv comment18 pages, 5 figures. Accepted for publication in Nuclear Instrumentation and Methods in Physics Research A

References in corpus (14)

• Test of a single module of the J-PET scanner based on plastic scintillators
• Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph
• A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals
• Test of CPT and Lorentz symmetry in entangled neutral kaons with the KLOE experiment
• Potential of the J-PET detector for studies of discrete symmetries in decays of positronium atom - a purely leptonic system
• Novel method for hit-position reconstruction using voltage signals in plastic scintillators and its application to Positron Emission Tomography
• Search for CP-violation in Positronium Decay
• Compressive Sensing of Signals Generated in Plastic Scintillators in a Novel J-PET Instrument
• Multiple scattering and accidental coincidences in the J-PET detector simulated using GATE package
• TOF-PET detector concept based on organic scintillators
• Study of the $K_S{K}_L\to \pi \ell \nu 3{\pi }^0$ process for time reversal symmetry test at KLOE-2
• Search for an exotic three-body decay of orthopositronium
• STRIP-PET: a novel detector concept for the TOF-PET scanner
• Hit time and hit position reconstruction in the J-PET detector based on a library of averaged model signals

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