Production of a pion in association with a high-Q2 dilepton pair in antiproton-proton annihilation at GSI-FAIR

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dc.creatorLansberg, J. P.
dc.creatorPire, B.
dc.creatorSzymanowski, L.
dc.date2007-10-05
dc.date.accessioned2026-07-07T10:57:36Z
dc.date.available2026-07-07T10:57:36Z
dc.descriptionWe evaluate the cross section for anti-p p -> l+ l- pi0 in the forward direction and for large lepton pair invariant mass. In this kinematical region, the leading-twist amplitude factorises into a short-distance matrix element, long-distance dominated antiproton Distribution Amplitudes and proton to pion Transition Distribution Amplitudes (TDA). Using a modelling inspired from the chiral limit for these TDAs, we obtain a first estimate of this cross section, thus demonstrating that this process can be measured at GSI-FAIR.
dc.descriptionLatex, 5 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0710.1267
dc.identifierhttp://arxiv.org/abs/0710.1267
dc.identifierPhys.Rev.D76:111502,2007
dc.identifierdoi:10.1103/PhysRevD.76.111502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186809
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Theory
dc.titleProduction of a pion in association with a high-Q2 dilepton pair in antiproton-proton annihilation at GSI-FAIR
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