A summary of the 2009 dijet asymmetries ...

Figure 1: The dijet yields in each mass bin for each spin bit.

The corresponding figures for the EEWW and EW topologies.

There were two corrections applied to the beam polarization values in this analysis: a correction for the decay of the polarization and a correction for the residual transverse beam components at STAR.

Figure 2: Comparison of the dijet A_LL values obtained with no correction to the beam polarization (Red), with only the beam decay correction (Blue), and with both the beam decay correction and the residual transverse component correction (Green). The blue points are plotted at the average dijet mass in that bin.

The corresponding figures for the ALY, ALB, ALLls, and ALLus asymmetries.

Figure 3: The basic dijet A_LL. The A_LL value is plotted at the bin center with no mass shift or trig & reco bias corrections applied. The beam decay and residual transvers polarization corrections have been made to the polarization values which enter into the asymmetry calculation.

This pdf contains A_LL as well as the four false asymmetries shown for the full topology as well as the EEWW and EW topologies seperately. The false asymmetries are fit with a P0 function.

In addition to looking at the asymmetries summed over all runs plotted as a function of mass, I have looked at them integrated over mass and plotted as a function of run index, fill index, and integrated over mass and run. Note that these plots were made for the combined topology only.

Figure 4: The dijet A_LL plotted as a function of run index and fit with a P0.

The corresponding figures for the ALY, ALB, ALLls, and ALLus asymmetries.

Figure 5: The dijet A_LL plotted as a function of fill index and fit with a P0.

The corresponding figures for the ALY, ALB, ALLls, and ALLus asymmetries.

Figure 6: The dijet asymmetries summed over mass and run index. The bottom panel is just a blow-up of the top panel focusing on the false asymmetries.

I have also looked at the asymmetries split into RFF and FF samples as well as L2JetHigh and JP1 trigger samples. Remember that the L2JetHigh sample contains all events where at least on jet fired the L2JetHigh L0 trigger (which contained the L2Jet requirement) and the JP1 trigger sample contained the events where at least one jet fired the JP1 L0 trigger and did not contain a jet which fired the L2JetHigh trigger.

Figure 7: The dijet A_LL for the RFF (Red) and FF (Blue) samples.

This PDF contains similar plots for all 5 asymmetries broken into the three topologies.

Figure 8: The dijet A_LL for the L2JetHigh (Red) and JP1 (Blue) samples.

This PDF contains similar plots for all 5 asymmetries broken into the three topologies.