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arXiv · 1302.2344

Quark Transverse Momentum Distributions inside a nucleon : a Light-Front Hamiltonian Dynamics study

Emanuele Pace·Giovanni Salme'·Sergio Scopetta·Alessio Del Dotto
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Abstract

Through an impulse approximation analysis of single spin Sivers and Collins asymmetries in the Bjorken limit, the possibility to extract the quark transverse-momentum distributions in the neutron from semi-inclusive deep inelastic electron scattering off polarized 3He is illustrated. The analysis is generalized to finite momentum transfers in a light-front Poincare' covariant framework, defining the light-front spin-dependent spectral function of a J=1/2 system. The definition of the light-front spin-dependent spectral function for constituent quarks in the nucleon allows us to show that, within the light-front dynamics, only three of the six leading twist T-even transverse-momentum distributions are independent.

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Emanuele Pace, Giovanni Salme', Sergio Scopetta, Alessio Del Dotto. 2013-02-10. Quark Transverse Momentum Distributions inside a nucleon : a Light-Front Hamiltonian Dynamics study. https://doi.org/10.5506/aphyspolbsupp.6.1001

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