Azimuthal asymmetries in semiinclusive deep inelastic scattering with polarized beam and/or target and their nuclear dependences
Abstract
Using the formalism obtained from collinear expansion, we calculate the differential cross section and azimuthal asymmetries in the semiinclusive deeply inelastic leptonnucleon (nucleus) scattering process ^{e}+N(A)→e^{}+q +X with both polarized beam and polarized target up to twist3. We derive the azimuthal asymmetries in terms of twist3 parton correlation functions. We simplify the results by using the QCD equation of motion that leads to a set of relationships between different twist3 functions. We further study the nuclear dependence of azimuthal asymmetries and show that they have similar suppression factors as those in the unpolarized reactions.
 Publication:

Physical Review D
 Pub Date:
 January 2014
 DOI:
 10.1103/PhysRevD.89.014005
 arXiv:
 arXiv:1308.1159
 Bibcode:
 2014PhRvD..89a4005S
 Keywords:

 13.60.r;
 12.38.t;
 13.88.+e;
 Photon and chargedlepton interactions with hadrons;
 Quantum chromodynamics;
 Polarization in interactions and scattering;
 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 version to appear in Phys. Rev. D