Transverse spin observables in hard-scattering hadronic processes within collinear factorization
Abstract
We review what is currently known about the transverse spin structure of hadrons, in particular from observables that can be analyzed within a collinear framework. These effects have been around for 40 years and represent a critical test of perturbative QCD. We look at both proton-proton and lepton-nucleon collisions for various final states. While the main focus is on transverse single-spin asymmetries, we also discuss how longitudinal-transverse double-spin asymmetries offer a complimentary, yet equally important, source of information on the quark-gluon content of hadrons. We also summarize some recent progress in solidifying the theoretical formalism behind these observables and give an outlook on future directions of research.
Keywords
Cite
@article{arxiv.1608.05353,
title = {Transverse spin observables in hard-scattering hadronic processes within collinear factorization},
author = {D. Pitonyak},
journal= {arXiv preprint arXiv:1608.05353},
year = {2016}
}
Comments
Typos corrected, references added/updated, invited review accepted in International Journal of Modern Physics A; 32 pages, 9 figures, 2 tables