Reference : A model for the off-forward structure functions of the pion
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/3695
A model for the off-forward structure functions of the pion
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 >]
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 >]
13-May-2004
Physics Letters B
Elsevier Science Bv
587
3-4
189-200
Yes (verified by ORBi)
International
0370-2693
Amsterdam
[en] off-forward pion structure function ; non-perturbative effects
[en] We extend our model for the pion, which we used previously to calculate its diagonal structure function, to the off-forward case. The imaginary part of the off-forward y*pi -->. gamma*pi scattering amplitude is evaluated in the chiral limit (m(pi) = 0) and related to the twist-two and twist-three generalised parton distributions H, H-3, (H) over tilde (3). Non-perturbative effects, linked to the size of the pion and still preserving gauge invariance, are included. Remarkable new relations between H, H3 and (H) over tilde (3) are obtained and discussed. (C) 2004 Published by Elsevier B.V.
http://hdl.handle.net/2268/3695
http://arxiv.org/abs/hep-ph/0310184

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