Speaker
Description
One of the main goals of the RHIC spin program is the determination of the transverse-spin structure of the proton, which can in turn provide some insight into the angular-momentum component of partons. The transverse single spin asymmetry ($A_{N}$) of pion production at mid-rapidity in pp collision provides good access to initial and final state transverse spin effects of quark and gluons. In contrast, electron single spin asymmetries from heavy flavor decays are mostly sensitive to gluon related initial state effects. Charged pion and electron measurements at mid-rapidity are preformed with the central arm detectors which consist of an Electro-Magnetic Calorimeter, a Ring-imaging Cherenkov Detector, Drift and Pad Chambers, and so on. The status of the pion and electron measurements from the 2015 running period with transversely polarized proton collisions will be presented.
