The pion form factor: Sudakov suppressions and intrinsic transverse momentum

It is demonstrated that any attempt to calculate the perturbative QCD contribution to the pion form factor requires the inclusion of intrinsic transverse momentum besides Sudakov form factors. For momentum transfers of the order of a few GeV the intrinsic transverse momentum leads to a substantial s...

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Detalles Bibliográficos
Autores principales: Jakob, R., Kroll, P.
Lenguaje:eng
Publicado: 1993
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(93)91770-N
https://dx.doi.org/10.1016/0370-2693(93)91642-Z
http://cds.cern.ch/record/250662
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author Jakob, R.
Kroll, P.
author_facet Jakob, R.
Kroll, P.
author_sort Jakob, R.
collection CERN
description It is demonstrated that any attempt to calculate the perturbative QCD contribution to the pion form factor requires the inclusion of intrinsic transverse momentum besides Sudakov form factors. For momentum transfers of the order of a few GeV the intrinsic transverse momentum leads to a substantial suppression of the perturbative QCD contribution.
id cern-250662
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
record_format invenio
spelling cern-2506622023-03-14T18:52:35Zdoi:10.1016/0370-2693(93)91770-Ndoi:10.1016/0370-2693(93)91642-Zhttp://cds.cern.ch/record/250662engJakob, R.Kroll, P.The pion form factor: Sudakov suppressions and intrinsic transverse momentumParticle Physics - TheoryIt is demonstrated that any attempt to calculate the perturbative QCD contribution to the pion form factor requires the inclusion of intrinsic transverse momentum besides Sudakov form factors. For momentum transfers of the order of a few GeV the intrinsic transverse momentum leads to a substantial suppression of the perturbative QCD contribution.It is demonstrated that a reliable calculation of the perturbative QCD contribution to the pion form factor in the few GeV region, requires the inclusion of both Sudakov corrections and the intrinsic transverse momentum dependence of the hadronic wave function. Then the perturbative contribution turns out to be self-consistent for momentum transfers as low as 1 to 2 GeV. On the other hand, the transverse momentum dependence of the wave function leads to a substantial suppression of the perturbative contribution in the few GeV region.hep-ph/9306259CERN-TH-6900-93WU-B-93-19CERN-TH-6900-93WU-B-93-19oai:cds.cern.ch:2506621993
spellingShingle Particle Physics - Theory
Jakob, R.
Kroll, P.
The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title_full The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title_fullStr The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title_full_unstemmed The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title_short The pion form factor: Sudakov suppressions and intrinsic transverse momentum
title_sort pion form factor: sudakov suppressions and intrinsic transverse momentum
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/0370-2693(93)91770-N
https://dx.doi.org/10.1016/0370-2693(93)91642-Z
http://cds.cern.ch/record/250662
work_keys_str_mv AT jakobr thepionformfactorsudakovsuppressionsandintrinsictransversemomentum
AT krollp thepionformfactorsudakovsuppressionsandintrinsictransversemomentum
AT jakobr pionformfactorsudakovsuppressionsandintrinsictransversemomentum
AT krollp pionformfactorsudakovsuppressionsandintrinsictransversemomentum

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