The STAR experiment

These plots were made from 5000 each of mu, pi-, and gamma single-particle events with eta distribution from -.2 to 1.2 and pt distribution from 5 to 40 GeV.  Tower clustering was done using a

Here’s a summary of results for null-test calculations of single-spin asymmetries for the Run 5 charged pion A_{LL} analysis. Asymmetries are defined as (Y,B):

Yellow Beam: -1 x { (++ + +-) - (-+ + —) }
Blue Beam: -1 x { (++ + -+) - (+- + —) }
Like-Sign: (++) - (—)
Unlike-Sign: (+-) - (-+)

All the asymmetries incorporate final beam polarizations.

I broke down and made an ntuple yesterday, which vastly speeds up the cut-testing process.  The following sequence of five histograms shows the tower energy spectrum (summed over the cluster)

These plots were made from 5000 events of each particle type.  For muons, tower clustering was done by setting a seed tower threshold of .25 GeV and a cluster threshold of .33 GeV: for gamma a

Here some plots of slopes for 2008 using runs 9061080, 9062099, 9063032, 9063117, and 9064017, which are all EmcCheck runs. The slopes are attached in a text file.

This is body of jan blog page 101

It was so cold but nice

Figures 1, 3, and 5 show plots involving geant preshower energy deposition (i.e., with no calorimeter simulation applied): for each tower-only cluster the preshowers in front of it are identified a

Using a series of response functions generated from single particle geant simulations and integrating the jet finder algorithm, I took each pythia jet and found it's detector energy.