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-inclu- sive deep inelastic electron scattering off polarized 3He is illustrated. The analysis is generalized to finite momentum transfers in a light-front Poincaré covariant framework, defining the light-front spin-dependent spectral func- tion 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.
Pace, E., Salme', G., Scopetta, S., Del Dotto, A. (2013). QUARK TRANSVERSE MOMENTUM DISTRIBUTIONS INSIDE A NUCLEON: A LIGHT-FRONT HAMILTONIAN DYNAMICS STUDY. ACTA PHYSICA POLONICA B, 6(1), 103-108 [10.5506/APhysPolBSupp.6.103].
QUARK TRANSVERSE MOMENTUM DISTRIBUTIONS INSIDE A NUCLEON: A LIGHT-FRONT HAMILTONIAN DYNAMICS STUDY
PACE, EMANUELE;
2013-01-01
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-inclu- sive deep inelastic electron scattering off polarized 3He is illustrated. The analysis is generalized to finite momentum transfers in a light-front Poincaré covariant framework, defining the light-front spin-dependent spectral func- tion 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
