EPJ Web of Conferences
Volume 73, 2014MENU 2013 – 13th International Conference Meson-Nucleon Physics and the Structure of the Nucleon
|Number of page(s)||4|
|Published online||09 June 2014|
Transverse single-spin asymmetries from p↑ + p → jet + X and p↑ + p → jet + π± + X at √s = 500 GeV at RHIC
Valparaiso University, USA
a e-mail: Jim.Drachenberg@valpo.edu
Published online: 9 June 2014
Current extractions of Sivers and transversity functions come from measurements of transverse single-spin asymmetries (SSA) from SIDIS and fragmentation functions from lepton-lepton scattering. The limited kinematic reach leaves sizable uncertainty in model predictions. One way to extend knowledge to higher kinematics is through jet production from high-energy polarized-proton collisions. The STAR detector at RHIC has observed hints of non-zero SSA's for the Collins effect from p↑ + p → jet + π± + X at 0 < η < 1 and √s = 200 GeV. Extending transverse SSA measurements for the first time to mid-rapidity jet production at 500 GeV allows one to examine the Sivers and Collins effects for a different mix of partonic subprocesses. Moreover, the increased gluon participation allows a more favorable examination of the gluon Collins-like effect. Progress toward these first measurements will be shown.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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