Single spin asymmetries and gluonic pole matrix elements

2008/06/27 by P. J. Mulders, Mulders, P. J.
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Magnetic Properties of Alloys #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.0806.4503

openalex publication_date 2008/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the emergence of single spin asymmetries (SSA) in hard processes using transverse momentum dependent (TMD) distribution and fragmentation functions. Specifically, the description of SSA involves time reversal-odd functions. Process-dependence (non-universality) in measurements of SSA can be attributed to the non-trivial gauge link structure in the TMD correlator. Finding the appropriate gauge links, however, also enables us to characterize the non-universality

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