Speaker
Description
Spin structures are important properties of nucleons. At the Relativistic Heavy Ion Collider (RHIC), the PHENIX experiment probed longitudinal spin structures by colliding two longitudinally polarized protons ($\vec{p}+\vec{p}$) and measuring its spin asymmetry ($A_{LL}$) of a variety of final states. Colliding a transversely polarized proton with a nucleon/ion ($\vec{p}+p/A$) provides similar access to the transverse single spin asymmetry ($A_N$). Direct photon, hadron, and jet production are the common channels used in measurements. Compared with hadron and jet production, direct photon production has little fragmentation contributions and is taken as the ``golden'' channel. On the other hand, hadron and jet production has larger statistics. Another channel is the forward neutron production, which is sensitive to the Regge behavior and the electromagnetic interactions. In this talk, I will highlight the recent PHENIX $A_{LL}$ and $A_N$ measurements from the direct photon, hadron, jet, and forward neutron production.
Details
Dr. Zhongling Ji from UCLA for the PHENIX Collaboration
| Is this abstract from experiment? | Yes |
|---|---|
| Name of experiment and experimental site | PHENIX detector using RHIC run of year 2013 |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | Yes |
