Two Photon Decays of Charmonia from Lattice QCD

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dc.creatorDudek, Jozef J.
dc.creatorEdwards, Robert G.
dc.date2006-07-12
dc.date2006-10-31
dc.date.accessioned2026-07-07T11:05:14Z
dc.date.available2026-07-07T11:05:14Z
dc.descriptionWe make the first calculation in lattice QCD of two-photon decays of mesons. Working in the charmonium sector, using the LSZ reduction to relate a photon to a sum of hadronic vector eigenstates, we compute form-factors in both the space-like and time-like domains for the transitions $η_c \to γ^* γ^*$ and $χ_{c0} \to γ^* γ^*$. At the on-shell point we find approximate agreement with experimental world-average values.
dc.descriptionReplaced with version to be published in PRL. Expanded discussion of possible systematic errors
dc.identifierhttps://arxiv.org/abs/hep-ph/0607140
dc.identifierhttp://arxiv.org/abs/hep-ph/0607140
dc.identifierPhys.Rev.Lett.97:172001,2006
dc.identifierdoi:10.1103/PhysRevLett.97.172001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189143
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.titleTwo Photon Decays of Charmonia from Lattice QCD
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