Hadronic Light-by-Light Scattering in the Muonium Hyperfine Splitting

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dc.creatorKarshenboim, S. G.
dc.creatorShelyuto, V. A.
dc.creatorVainshtein, A. I.
dc.date2008-06-10
dc.date2008-07-09
dc.date.accessioned2026-07-07T11:51:33Z
dc.date.available2026-07-07T11:51:33Z
dc.descriptionWe consider an impact of hadronic light-by-light scattering on the muonium hyperfine structure. A shift of the hyperfine interval $Δν({\rm Mu}) _{\rm\tiny HLBL}$ is calculated with the light-by-light scattering approximated by exchange of pseudoscalar and pseudovector mesons. Constraints from the operator product expansion in QCD are used to fix parameters of the model similar to the one used earlier for the hadronic light-by-light scattering in calculations of the muon anomalous magnetic moment. The pseudovector exchange is dominant in the resulting shift, $Δν({\rm Mu})_{\rm\tiny HLBL}= -0.0065(10) {Hz}$. Although the effect is tiny it is useful in understanding the level of hadronic uncertainties.
dc.description16 pages, 7 figures, a reference added
dc.identifierhttps://arxiv.org/abs/0806.1751
dc.identifierhttp://arxiv.org/abs/0806.1751
dc.identifierPhys.Rev.D78:065036,2008
dc.identifierdoi:10.1103/PhysRevD.78.065036
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203936
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHadronic Light-by-Light Scattering in the Muonium Hyperfine Splitting
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