https://doi.org/10.1051/epjconf/20100303032
Longitudinal and transverse parton momentum distributions for pion and nucleon within relativistic constituent quark models
1
Dep. de Física, Instituto Tecnológico de
Aeronáutica, 12.228-900
São José dos Campos,
São Paulo,
Brazil
2
Dipartimento di Física, Università degli Studi di Roma “Tor
Vergata” and Istituto Nazionale di Física Nucleare, Sezio nèTor
Vergata, Via della
Ricerca Scientifica 1, 00133
Roma,
Italy
3
Dipartimento di Física Nucleare e Teorica, Università deg li
Studi di Pavia and Istituto Nazionale di Física Nucleare,
Sezione di Pavia,
Pavia,
Italy
4
Istituto Nazionale di Física Nucleare, Sezione di
Roma, P.le A. Moro 2, 00185
Roma,
Italy
a e-mail: pace@roma2.infn.it
Longitudinal and transverse quark momentum distributions for the pion and the nucleon are calculated from quark-hadron vertexes obtained by an investigat ion of electromagnetic form factors within relativistic constituent quark models. The no-helicity flip generalized parton distributions for the pion are evaluated within three different models. The relevance for the pion of the one-gluon-exchange dominance at short range for the behavior of the form factor at large momentum transfer and of the parton distributions at the end points is shown.
© Owned by the authors, published by EDP Sciences, 2010