Nothing anomalous about two-loop HBCPT: consistency with the LET for spin-dependent Compton scattering

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dc.creatorMcGovern, Judith A.
dc.creatorBirse, Michael C.
dc.date1999-08-04
dc.date1999-12-23
dc.date.accessioned2026-07-07T11:35:43Z
dc.date.available2026-07-07T11:35:43Z
dc.descriptionThe leading order contributions of processes involving anomalous pion-photon vertices to forward spin-dependent Compton scattering from nucleons are considered in heavy-baryon chiral perturbation theory. These all involve the exchange of three pions between one or two photons and the nucleon, and hence are two-loop processes. We find that the sum of these processes vanishes in the manner predicted by the low energy theorem of Low, Gell-Mann and Goldberger as the photon energy goes to zero. This provides the first consistency test of two-loop HBCPT.
dc.descriptionMinor typos corrected. 7 pages RevTeX, 1 eps figure
dc.identifierhttps://arxiv.org/abs/hep-ph/9908249
dc.identifierhttp://arxiv.org/abs/hep-ph/9908249
dc.identifierPhys.Rev.D61:017503,2000
dc.identifierdoi:10.1103/PhysRevD.61.017503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198687
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleNothing anomalous about two-loop HBCPT: consistency with the LET for spin-dependent Compton scattering
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