Transverse momentum distributions and nuclear effects
1 Dipartimento di Fisica, Università di Roma “Tor Vergata” and INFN, Roma 2, Italy
2 Dipartimento di Fisica, Università di Roma Tre and INFN, Roma 3, Italy
3 Bogoliubov Lab. Theor. Phys., 141980, JINR, Dubna, Russia
4 Dipartimento di Fisica e Geologia, Università di Perugia and INFN, Sezione di Perugia, Italy
5 INFN Sezione di Roma, Italy
a e-mail: firstname.lastname@example.org
Published online: 23 January 2015
A distorted spin-dependent spectral function for 3He is considered to take care of the final state interaction in the extraction of the quark transverse-momentum distributions in the neutron from semi-inclusive deep inelastic electron scattering off polarized 3He at finite momentum transfers. The generalization of the analysis in a Poincaré covariant framework within the light-front dynamics is outlined. The definition of the light-front spin-dependent spectral function for a J=1/2 system, as the nucleon, allows us to show that within the light-front dynamics and in the valence approximation only three of the six leading twist T-even transverse-momentum distributions are independent.
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