Group Meeting Update
Progress towards a measurement of A_{LL} for charged pion production opposite a trigger jet using data from the 2006 STAR run. Goal is to present this measurement as a function of z
, defined here as p_{T}(pi) / p_{T}(trigger jet)
.
Update 2008-08-28: added data/MC comparison plots
Cuts Summary
Updated on Thu, 2008-09-04 14:45. Originally created by kocolosk on 2008-08-22 03:35.This page summarizes the effect of each major cut in the 2006 jet+charged pion analysis. Each plot is obtained by applying all other applicable analysis cuts except the one being illustrated.
Figure 1: Black is TPC z-vertex for all BJP1-triggered events, Green is the TPC z-vertex distribution for events in BBC timebins 6-9, and Red is the TPC z-vertex distributions for all charged pion tracks (inclusive, no trigger jet requirement).
It appears at first that the vz distribution of good tracks is broader than the BBC 6-9 distribution, but that’s not actually the case. Here’s the ratio of the red and green histograms from the above plot:
Figure 1b
The following histograms use positively charged pions from any spin state. Black lines are inclusive π+ passing all cuts except the one being shown, green lines are leading π+ opposite a trigger jet, and the filled green histogram shows the π+ accepted for the asymmetry analysis.
Figure 2: |η| < 1.0
Figure 3: |dcaG| < 1.0
Figure 4: nHitsFit > 25
Figure 5: nσ(π). It’s not possible to read off the efficiency from this histo because I actually use a time-dependent cut window based on the results of fill-by-fill fits to the nσ(π) distributions. Ideal world cut shown is nσ(π) [-1,2]
Here’s the ratio of the green and black histograms from that plot. The away-side spectrum has a relative lack of electrons but an increase in the p/K contamination:
Figure 5b
I should also add some more plots here documenting the cuts on jet pT, detector η, and N.E.F.
SSA vs. z
Updated on Fri, 2008-08-22 02:44. Originally created by kocolosk on 2008-08-22 02:41.Asymmetries are defined as (Y,B):
SSA vs. Fill
Updated on Fri, 2008-08-22 02:40. Originally created by kocolosk on 2008-08-22 02:37.Asymmetries are defined as (Y,B):
Details of Events with mismatched PPV VPD vertices with vertex location forced
I've run through 5 events where the vpd and the PPV vertices don't match. daq file location is:
star/data05/scratch/balewski/2008-daq/st_fmsslow_9060086_raw_1090001.daq
List of Jobs for run 9 as of 8/21/08
Updated on Thu, 2008-08-21 11:28. Originally created by sowinski on 2008-08-21 11:28.Attached is a list of jobs for run 9 with names of those volunteering to handle tasks.
Kaon-Proton correlations from Year2
Updated on Thu, 2008-08-21 11:23. Originally created by kisiel on 2008-08-21 11:23.Reference
Speaker : Adam Kisiel, OSU
Talk time : 09:00, Duration : 00:20
www.star.bnl.gov/protected/hbt/kisiel/080822/KaonProtonSHAnalysis.php
STAR HBT meeting
Updated on Thu, 2008-08-21 11:14. Originally created by kisiel on 2008-08-21 11:14., at 13:00 (GMT), duration : 02:00
Time | Talk | Presenter |
---|---|---|
09:00 | Kaon-Proton correlations from Year2 ( 00:20 ) 0 files | Adam Kisiel, OSU |
09:20 | Proton femtoscopy with EPOS ( 00:20 ) 0 files | Hania Zbroszczyk (WUT) |
09:40 | pi-Xi update and fastMC ( 00:20 ) 0 files | Petr Chaloupka |
Spin PWG meeting
Updated on Thu, 2008-08-21 12:21. Originally created by sichterm on 2008-08-20 23:49.317 263 8800 1 9629077# 1, at 19:00 (GMT), duration : 01:30
Spin asymmetry statistical errors, part 2
Updated on Wed, 2008-08-20 18:32. Originally created by kurnadi on 2008-08-20 18:14.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.
Radiation Monitoring
Updated on Wed, 2008-08-20 17:34. Originally created by matis on 2008-08-20 17:34.Speaker : Howard M.
Talk time : 00:45, Duration : 00:20
AOB
Updated on Wed, 2008-08-20 17:16. Originally created by matis on 2008-08-20 17:16.Talk time : 00:50, Duration : 00:10
SSD Hardware
Updated on Wed, 2008-08-20 17:16. Originally created by matis on 2008-08-20 17:16.Speaker : Micheal
Talk time : 00:40, Duration : 00:10
MimoSTAR 3 Testing
Updated on Thu, 2008-08-21 11:49. Originally created by matis on 2008-08-20 17:15.Speaker : Collin
Talk time : 00:30, Duration : 00:10
Pixel Electrical
Updated on Wed, 2008-08-20 17:10. Originally created by matis on 2008-08-20 17:10.Speaker : Leo
Talk time : 00:20, Duration : 00:10
IHPC Meeting
Updated on Wed, 2008-08-20 17:09. Originally created by matis on 2008-08-20 17:09.Talk time : 00:05, Duration : 00:05
PIXEL Mechanical
Updated on Wed, 2008-08-20 17:10. Originally created by matis on 2008-08-20 17:05.Speaker : Howard W.
Talk time : 00:10, Duration : 00:10
News
Updated on Wed, 2008-08-20 17:04. Originally created by matis on 2008-08-20 17:04.Speaker : Hans Georg/Flemming
Talk time : 00:00, Duration : 00:10
HFT-Software
Updated on Wed, 2008-08-20 07:13. Originally created by margetis on 2008-08-20 07:13.510-4867333, at 17:30 (GMT), duration : 01:00
TBD
Time | Talk | Presenter |
---|---|---|
13:30 | Lc update + material for CDR ( 00:15 ) 1 file | Jan Kapitan |
13:45 | B decay simulation update ( 00:20 ) 1 file | Quan Wang |
01 statistical analysis of 2008 HV
Updated on Wed, 2008-08-20 08:02. Originally created by balewski on 2008-08-19 16:54. Under:Goal: study eta dependence of 2008 BTOW HV