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Checking the isolation cut vs pythia events
Abstract: We evaluate the rejection power vs efficiency of an isolation cut using a 1-tower cluster using pythia Monte Carlo. The energy of the 1-tower cluster is corrected for l
pT dependence of the isolation cut
Updated on Sun, 2008-07-27 14:26. Originally created by jwebb on 2008-07-26 16:18.
Improving the Isolation Cut, part III
Updated on Sat, 2008-07-26 15:43. Originally created by jwebb on 2008-07-26 14:23.Abstract: meh.
Figure 1 -- Baseline isolation setup. No fiducial cuts, toy model leakage correction.
Improving the Isolation Cut, part II
Updated on Sat, 2008-07-26 11:23. Originally created by jwebb on 2008-07-25 10:44.Abstract: Improving the Isolation Cut I studied the impact of cluster size on isolation cuts using fairly simple MC events. It appears from this study that using 1-tower clusters w/ a correction factor for energy leakage is a promising way to improve pi0 rejection while keeping gamma efficiency high. In this blog entry I will try to further refine the simple model which I employed
in the original study.
chi^{2} criteria for primaries tracks
Updated on Mon, 2008-07-28 14:59. Originally created by bouchet on 2008-07-24 14:00.Cut on chi^{2} of tracks
The primaries tracks are flagged with a cut on dcaGlobal < 3cm.
run6-bjp1-asigma-away
Updated on Thu, 2008-07-24 12:11. Originally created by kocolosk on 2008-07-24 12:10.SSA vs. fill -- Run 6 -- BJP1
Updated on Thu, 2008-07-24 12:21. Originally created by kocolosk on 2008-07-23 22:11.Event Cuts
- 6 < BBC time bin < 9
- Usual Spin DB QA checks, including masked bxings identified by Tai
Jet Cuts
- p_{T} > 3.5
- -0.7 < detector η < 0.9
- R_{T} < 0.92
- jet axis within 36 degrees of triggered jetpatch center
Track Cuts
- 2 < p_{T} < 10
- |η| < 1.0
- nFitPoints > 25
- |dcaGlobal| < 1.0
- recalibrated nσ(π) in [-1,2]
- ΔR relative to jet > 1.5
Asymmetries are defined as (Y,B):
Yellow Beam: -1 x { (++ + +-) - (-+ + —) }
Blue Beam: -1 x { (++ + -+) - (+- + —) }
Like-Sign: (++) - (—)
Unlike-Sign: (+-) - (-+)
SSA vs. pT -- Run 6 -- BJP1
Updated on Thu, 2008-07-24 12:21. Originally created by kocolosk on 2008-07-23 20:45.Event Cuts
- 6 < BBC time bin < 9
- Usual Spin DB QA checks, including masked bxings identified by Tai
Jet Cuts
- p_{T} > 3.5
- -0.7 < detector η < 0.9
- R_{T} < 0.92
- jet axis within 36 degrees of triggered jetpatch center
Track Cuts
- 2 < p_{T} < 10
- |η| < 1.0
- nFitPoints > 25
- |dcaGlobal| < 1.0
- recalibrated nσ(π) in [-1,2]
- ΔR relative to jet > 1.5
Asymmetries are defined as (Y,B):
Yellow Beam: -1 x { (++ + +-) - (-+ + —) }
Blue Beam: -1 x { (++ + -+) - (+- + —) }
Like-Sign: (++) - (—)
Unlike-Sign: (+-) - (-+)
Future Plans for ZDC as a Local Polarimeter
Future Plans for ZDC as a Local Polarimeter
QA part II (cont.)
Updated on Wed, 2008-07-23 19:08. Originally created by melnimr on 2008-07-23 11:53.I took a quick look at the new prodcution P08ic_tpc compared to the old production P07id (with no refmult cuts and same run-number):