Transverse Single Spin Asymmetry Measurement with J/$\Psi$ in Polarized p+p Collisions at RHIC

ORAL

Abstract

The measurement of transverse single spin asymmetries($A_N$) gives us an opportunity to probe the quark and gluon structure of transversely polarized nucleons. PHENIX experiment has collected 2.7 pb$^{-1}$ data in transversely polarized p+p collisions at $\sqrt{s}$=200GeV in 2006 run. At RHIC energy, J/$\Psi$ production is dominated by gluon-gluon fusion, thus Collins effect has minimum impact on $A_N$ as the gluon's transversity is zero. Therefore, the measurement of $A_N$ in J/$\Psi$ production offers a good opportunity to gain information on gluon's Sivers effect. Results from 2006 for J/$\Psi$ $A_N$ at forward rapidity will be presented.

Authors

  • Han Liu

    Los Alamos National Lab