The STAR experiment

Attached is a list of jobs for run 9 with names of those volunteering to handle tasks.

Updated the dE/dx cut. Previous asymmetry calculations was using +/- 3σ in dE/dx. The following has a tighter cut on the lower end, varies with momentum bins.

1.0 MC Event Sample

1. Pythia event sample (pibero's gamma trees) w/ proper weighting for partonic pT bins
2. No offline trigger simulation
3. full EEMC acceptance

2.0 Definition of Isolation Cut

1. See You do not have access to view this node for definition of the 1-tower isolation cut and evaluation of rejection versus efficiency based on pythia events.
2. See You do not have access to view this node for data vs MC comparison, including trigger simulation.

Geometry used in simulation/embedding for hits projection

For embedding with SSD, we project GEANT hits on real geometry.

 The following plots are for data.

In order to estimate the order magnitude of the single spin Collins asymmetry at midrapidity I calcuated the following partonic components from jet reconstruction using the STAR PYTHIA + GEANT simu

I have looked at the new P08ic AuAu production that was done with Minuit3 VF to test Anthony's modified VF.

WORK IN PROGRESS

I started with the 2006 Simulation Jet Trees. Using the ConeJets12 and PythiaJet branches, I associated the detector jets to the nearest pythia jet by distance in eta-phi space.

This study on statistical errors was prompted by the horrible linear fit to the fill-by-fill inclusive electron asymmetry, as shown at the June 2008 Collaboration Meeting at UC Davis.