Article (Scientific journals)
A model for the off-forward structure functions of the pion
Bissey, F.; Cudell, Jean-René; Cugnon, Joseph et al.
2004In Physics Letters B, 587 (3-4), p. 189-200
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Keywords :
off-forward pion structure function; non-perturbative effects
Abstract :
[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.
Disciplines :
Physics
Author, co-author :
Bissey, F.
Cudell, Jean-René  ;  Université de Liège - ULiège > Département d'astrophys.
Cugnon, Joseph ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique
Lansberg, Jean-Philippe ;  Université de Liège - ULiège > Département d'astrophys.
Stassart, Pierre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Interactions fondamentales en physique et astrophysique
Language :
English
Title :
A model for the off-forward structure functions of the pion
Publication date :
13 May 2004
Journal title :
Physics Letters B
ISSN :
0370-2693
eISSN :
1873-2445
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
587
Issue :
3-4
Pages :
189-200
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 January 2009

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