Relativistic Kinetic Vertex in Positronium

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We derive Spinless Salpeter equation for the positronium using the NRQED Lagrangian. Consequently, we consider the Spinless Salpeter wavefunction instead of the Schrodinger wavefunction to show that the NRQED calculation can be done easier. We also discuss that the singularity of the Spinless Salpeter wavefunction at the origin is necessary to cancel the ultraviolet divergence in the NRQED calculations.
12 pages, 6 figures

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/41333

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0202224
 http://arxiv.org/abs/hep-ph/0202224

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arXiv