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

Year: 2026

Type: article

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.

Source: Canadian Journal of Physics

DOI: 10.1139/cjp-2025-0189

Authors: Veena Devi V. Shastrimath, Sovan Ghosh, Bhavyashri Shetty, K.B. Vijaya Kumar, Antony Prakash Monteiro, Vipin N.S. Naik

Institutions: ICFAI University, Tripura, Don Bosco Institute of Technology, Don Bosco Institute of Technology, St. Philomena's College, Mysuru, Mangalore University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7128514443

FWCI:

Cites: 48

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