The photon-pion transition form factor for virtual photons

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dc.creatorDiehl, M.
dc.creatorKroll, P.
dc.creatorVogt, C.
dc.date2001-05-31
dc.date2001-11-13
dc.date.accessioned2026-07-07T03:44:39Z
dc.date.available2026-07-07T03:44:39Z
dc.descriptionWe discuss the photon to meson transition form factor for virtual photons, which can be measured in e+ e- collisions. We demonstrate that this form factor is independent of the shape of the meson distribution amplitude over a wide kinematical range. This leads to a parameter-free prediction of perturbative QCD to leading twist accuracy, which has a status comparable to the famous leading-twist prediction of the cross section ratio R.
dc.description4 pages, 5 figures. Talk delivered by C. Vogt at the workshop "e+ e- Physics at Intermediate Energies", SLAC, April 30 - May 2, 2001. v2: Some clarifications in the text
dc.identifierhttps://arxiv.org/abs/hep-ph/0105342
dc.identifierhttp://arxiv.org/abs/hep-ph/0105342
dc.identifiereConf C010430 (2001) T21
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/40653
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe photon-pion transition form factor for virtual photons
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