Feasibility study of the time reversal symmetry tests in decays of metastable positronium atoms with the J-PET detector

Abstract

This article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of T symmetry tests is discussed with an emphasis on the scarcely explored sector of leptonic systems. Two possible strategies of searching for manifestations of T violation in non-vanishing angular correlations of final state observables in the decays of metastable triplet states of positronium available with J-PET are proposed and discussed. Results of a pilot measurement with J-PET and assessment of its performance in reconstruction of three-photon decays are shown along with an analysis of its impact on the sensitivity of the detector for the determination of T -violation sensitive observables.

arXiv comment15 pages, 9 figures. Submitted to Advances in High Energy Physics

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Cited by in corpus (1)

• Status and Prospects of Discrete Symmetries Tests in Positronium Decays with the J-PET Detector