The STAR experiment

 Plots show A_L for W+, W- as function of E_T (fig1,2) and eta (fig3) 

I assumed beam pol=70%, electron/positron reco off 70%, no vertex cut (as for all earlier analysis).

NO QCD background dilution.

For A_L(E_T)  I integrated over eta [-2,-1] , [-1,+1], or [1,2] and assumed no background

For A_L(Eta)  I integrated over E_T>25 GeV and assumed no background

Fig 1 ( PS.zip )

Fig 2 ( PS.zip )

Accounted for 2 beams at mid rapidity.

Fig 3