9-14 September 2018
University of Ferrara
Europe/Rome timezone

Measurement of W single spin asymmetries at PHENIX

13 Sep 2018, 15:30
A10 (Polo degli Adelardi - Via Adelardi, 33)


Polo degli Adelardi - Via Adelardi, 33

Parallel Sessions Nucleon Helicity Structure Nucleon helicity structure


Dr Sanghwa Park (Stony Brook University)


The measurement of the single spin asymmetries of parity violating W boson production in longitudinally polarized proton collisions provides unique and clean access to the light sea quark helicity distributions. The W boson couples only to left-handed quarks and right-handed anti quarks, and hence one can directly relate the charge of the W with initial state quark flavors. The PHENIX experiment at RHIC has performed the single spin asymmetry measurements at √s =510 GeV in 2011-2013. W bosons are accessed through their lepton decays at PHENIX, electrons at mid-rapidity and muons at forward rapidity. In this talk, the recent results of the single spin asymmetries will be presented.

Primary author

Dr Sanghwa Park (Stony Brook University)

Presentation Materials