Spectrum of the S-wave positronium in the framework of non-relativistic models

Canadian Journal of Physics 2026 Open access

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Authors: V. Veena Devi Shastrimath, Sovan Ghosh, Bhavyashri Shetty, K. B. Vijaya Kumar, Antony Prakash Monteiro, Vipin N S Naik
DOI: 10.1139/cjp-2025-0189
Cited by: 0
References: 48

Abstract

The mass spectrum of the S-wave positronium is considered in the framework of a non-relativistic model. A good agreement is obtained with the experimental masses of the 1 S 0 , singlet state, the para-positronium, and the 3 S 1 state, the ortho-positronium. The role of one-photon exchange potential (OPEP) and the confinement potential is discussed. The mass difference between ortho- and para-positronium is attributed to the spin-dependent terms of OPEP.

Fields of Study & Subjects

Quantum Chromodynamics and Particle Interactions Atomic and Molecular Physics Particle physics theoretical and experimental studies

Publication details

Journal / source
Canadian Journal of Physics
Volume
104
Pages
1–7
Publication date
1 January 2026
Language
EN