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European Physical Journal C: Particles and Fields
Article . 2001 . Peer-reviewed
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European Physical Journal C: Particles and Fields
Article
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Preprint . 2001
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https://dx.doi.org/10.48550/ar...
Article . 2001
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The annihilation of virtual photons into pseudoscalar mesons

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Dec 2001Embargo end date: 01 Jan 2001 Germany Publisher:Springer Science and Business Media LLCJournal:The European Physical Journal C, volume 22, pages 439-450 (issn: 1434-6044, eissn: 1434-6052, Copyright policy )
Authors: Diehl, M.; Kroll, P.; Vogt, C.;

doi: 10.1007/s100520100830 , 10.48550/arxiv.hep-ph/0108220

arXiv: http://arxiv.org/abs/hep-ph/0108220

The annihilation of virtual photons into pseudoscalar mesons

Abstract

We investigate the possibility to constrain the pion distribution amplitude from the gamma* gamma* -> pi transition. For a surprisingly large range in the two photon virtualities we find that the transition form factor is essentially independent of the distribution amplitude. This in turn entails a parameter-free prediction of QCD. The gamma* gamma* -> eta, eta' form factors are also briefly discussed. We estimate that experimental studies might be feasible at the existing e+ e- experiments BaBar, Belle, and CLEO.

22 pages latex, 9 figures

Country
Germany
Related Organizations
Keywords

exchange: two-photon, form factor: transition, eta(958), Feynman graph, pi, electron positron: inelastic scattering, FOS: Physical sciences, eta, photon photon: interaction, photon: off-shell, High Energy Physics - Phenomenology, differential cross section: momentum transfer, High Energy Physics - Phenomenology (hep-ph), pseudoscalar meson: photoproduction, quantum chromodynamics, info:eu-repo/classification/ddc/530, numerical calculations, photon: on-shell

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 37
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    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
37
Average
Top 10%
Top 10%
Green
gold