In a perturbative QCD approach, with inclusion of spin and transverse momentum effects, experimental data on azimuthal asymmetries observed in polarized semiinclusive deeply inelastic scattering and e(+) e(-) annihilations can be used to determine the Sivers, transversity, and Collins soft functions. By using these functions, within the same scheme, we predict p(uparrow) p -> h + X single spin asymmetries in remarkable agreement with high energy experimental data.
Single spin asymmetries in inclusive hadron production from semiinclusive DIS to hadronic collisions: Universality and phenomenology
D'ALESIO, UMBERTO;
2008-01-01
Abstract
In a perturbative QCD approach, with inclusion of spin and transverse momentum effects, experimental data on azimuthal asymmetries observed in polarized semiinclusive deeply inelastic scattering and e(+) e(-) annihilations can be used to determine the Sivers, transversity, and Collins soft functions. By using these functions, within the same scheme, we predict p(uparrow) p -> h + X single spin asymmetries in remarkable agreement with high energy experimental data.
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