Reference : A model for the pion structure function
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/3721
A model for the pion structure function
English
Bissey, F. [> > > >]
Cudell, Jean-René mailto [Université de Liège - ULg > Département d'astrophys.]
Cugnon, Joseph mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique >]
Jaminon, Martine mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Lansberg, Jean-Philippe mailto [Université de Liège - ULg > Département d'astrophys.]
Stassart, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique >]
7-Nov-2002
Physics Letters B
Elsevier Science Bv
547
3-4
210-218
Yes (verified by ORBi)
International
0370-2693
Amsterdam
[en] pion structure function ; gauge invariance ; non-perturbative effects
[en] The pion structure function is investigated in a simple model, where pion and constituent quark fields are coupled through the simplest pseudoscalar coupling. The imaginary part of the forward gamma*pi --> gamma*pi evaluated and related to the structure functions. It is shown that the introduction of non-perturbative effects linked to the size of the pion and preserving gauge invariance, allows a connection with the quark distribution. It is predicted that higher-twist terms become negligible for Q(2) larger than similar to 2 GeV2 and that quarks in the pion have a momentum fraction smaller than in the proton case. (C) 2002 Elsevier Science B.V. All rights reserved.
Researchers
http://hdl.handle.net/2268/3721
http://arxiv.org/abs/hep-ph/0207107

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