2011/12/31 by S. Mert Aybat, Alexei Prokudin, Ted C. Rogers · 90 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Asymmetry #Atomic and Subatomic Physics Research #Compass #Deep inelastic scattering #Electron Spin Resonance Studies #Inelastic scattering #Scattering #Spin (aerodynamics) #Transverse plane #Universality (dynamical systems) #hep-ph
paper · pdf · doi:10.1103/physrevlett.108.242003
published in Physical Review Letters 108(24), 242003 (American Physical Society) · 4 pages, 2 figures. Version published in Physical Review Letters
openalex publication_date 2012/06/13 · arxiv created 2012/06/27 · arxiv updated 2013/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The Sivers transverse single spin asymmetry (TSSA) is calculated and compared at different scales using the transverse-momentum-dependent (TMD) evolution equations applied to previously existing extractions. We apply the Collins-Soper-Sterman (CSS) formalism, using the version recently developed by Collins. Our calculations rely on the universality properties of TMD functions that follow from the TMD-factorization theorem. Accordingly, the nonperturbative input is fixed by earlier experimental measurements, including both polarized semi-inclusive deep inelastic scattering (SIDIS) and unpolarized Drell-Yan (DY) scattering. It is shown that recent preliminary COMPASS measurements are consistent with the suppression prescribed by TMD evolution.