2008/07/31 by Bing Zhang, Zhun Lu, Zhun Lü +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.78.034035
published as Phys.Rev.D78:034035,2008 · 9 latex pages, 18 figures, to appear in PRD
arxiv created 2008/08/22 · openalex publication_date 2008/08/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We use the Boer-Mulders functions parameterized from unpolarized p+D Drell-Yan data by the FNAL E866/NuSea Collaboration combined with recently extracted Collins functions to calculate the cos2\ensuremathφ asymmetries in unpolarized semi-inclusive deeply inelastic scattering (SIDIS) processes both for ZEUS at the Hadron Electron Ring Accelerator (HERA) and Jefferson Lab (JLab) experiments and to compare our results with their data. We also give predictions for the cos2\ensuremathφ asymmetries of SIDIS in the kinematical regime of HERMES Collaboration, and the forthcoming JLab experiments. We predict that the cos2\ensuremathφ asymmetries of semi-inclusive \ensuremathπ^\ensuremath- production are somewhat larger than that of \ensuremathπ+ production. We suggest the measurement of these two processes separately, which will provide more detailed information on the Boer-Mulders functions as well as on the Collins functions.