Parapositronium Decay and Dispersion Relations

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dc.creatorCastro, G. Lopez
dc.creatorPestieau, J.
dc.creatorSmith, C.
dc.creatorTrine, S.
dc.date2000-06-01
dc.date.accessioned2026-07-07T03:41:37Z
dc.date.available2026-07-07T03:41:37Z
dc.descriptionPositronium decay rates are computed at the one-loop level, using convolution-type factorized amplitudes. The dynamics of this factorization is probed with dispersion relations, showing that unallowed approximations are usually made, and some ordre alpha^2 corrections missed. Further, we discuss the relevance of the Schrodinger wavefunction as the basis for perturbative calculations. Finally, we apply our formalism to the parapositronium two-photon decay.
dc.descriptionLaTeX, 13 pages, 1 eps figure
dc.identifierhttps://arxiv.org/abs/hep-ph/0006016
dc.identifierhttp://arxiv.org/abs/hep-ph/0006016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/39646
dc.subjectHigh Energy Physics - Phenomenology
dc.titleParapositronium Decay and Dispersion Relations
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