Spin PWG
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Upcoming Conferences
Reference
Speaker : Akio/Bernd
Talk time : 15:00, Duration : 00:10
http://www.star.bnl.gov/protected/spin/spin/Conferences.html
Spin PWG
, at 00:00 (GMT), duration : 00:00
| Time | Talk | Presenter |
|---|---|---|
| 15:00 | Upcoming Conferences ( 00:10 ) 0 files | Akio/Bernd |
| 15:10 | Di-jet A_LL analysis update ( 00:20 ) 1 file | Tai |
| 15:30 | Run6 Production Status & QA ( 00:20 ) 0 files | Issam |
| 15:50 | Di-jet Sivers paper ( 00:20 ) 0 files | Jan |
| 16:10 | Spin Document for Long Range Planning ( 00:20 ) 0 files | Akio/Bernd |
2006 di-jet Sivers PRL paper
Measurement of Transverse Single-Spin Asymmetries for Di-Jet Production in Proton-Proton Collisions at sqrt(s) of 200 GeV
Target Journal: PRL
Single Spin Asymmetries by Fill
Away-side only
BJP1 (hardware & software & geometric) requirement, only use pions with dR > 1.5
Asymmetries for near-side and away-side pions
Summary:
I associated charged pions from JP2 events with the jets that were found in these events. If a jet satisfied a set of cuts (including the geometric cut to exclude non-trigger jets), I calculated a deltaR from this jet for each pion in my sample. Then I split up my sample into near-side and away-side pions and calculate an asymmetry for both samples.
Charged Hadrons
Updated on Mon, 2008-07-28 00:09. Originally created by kocolosk on 2006-07-07 09:37.Reference
Speaker : Adam Kocoloski ( MIT )
Talk time : 13:15, Duration : 00:45
First Look at Charged Pion Trigger Bias
Motivation:
The charged pion A_LL analysis selects pions from events triggered by the EMC. This analysis attempts to estimate the systematic bias introduced by that selection.
Conditions:
- Simulation files, database timestamps, and selection cuts are the same as the ones used in the 2005 Charged Pion Data / Simulation Comparison
- Polarized PDFs are incorporated into simulation via the framework used by the jet group. In particular, only GRSV-std is used as input, since LO versions of the other scenarios were not available at the time.
- Errors on A_LL are calculated according to Jim Sowinski's recipe.
Plots:
Conclusion:
The BBC trigger has a negligible effect on the asymmetries, affirming its use as a "minimum-bias" trigger. The EMC triggers introduce a positive bias of as much as 1.0% in both asymmetries. The positive bias is more consistent in JP2; the HT2 asymmetries are all over the map.
Spin Parallel Session
Updated on Thu, 2006-12-28 10:17. Originally created by kocolosk on 2006-07-03 20:28.| Time | Talk | Presenter |
|---|---|---|
| 09:00 | Inclusive jets ( 01:30 ) 1 file | Jet group |
| 10:30 | Inclusive pi0 - BEMC ( 00:45 ) 1 file | Frank Simon (MIT) |
| 11:15 | Coffee Break ( 00:15 ) 0 files | (MIT) |
| 11:30 | Inclusive pi0 - EEMC ( 00:45 ) 0 files | Jason Webb (Valparaiso) |
| 12:15 | Lunch ( 01:00 ) 0 files | (Valparaiso) |
| 13:15 | Charged Hadrons ( 00:45 ) 1 file | Adam Kocoloski (MIT) |
| 14:00 | Di-jets/Di-hadrons - ALL ( 00:45 ) 1 file | Tai Sakuma (MIT) |
| 14:45 | Coffee Break ( 00:15 ) 0 files | (MIT) |
| 15:00 | Di-jets - Sivers ( 01:00 ) 1 file | Jan Balewski (IUCF) |
| 16:00 | Lambda ( 00:45 ) 1 file | Qinghua (LBL) |
| 16:45 | Coffee Break ( 00:15 ) 0 files | (LBL) |
| 17:00 | Relative Luminosity ( 00:30 ) 1 file | Tai Sakuma (MIT) |
| 17:30 | Production ( 00:15 ) 0 files | All (MIT) |
| 17:45 | 2006 Analysis topics / Analysis tools ( 00:45 ) 0 files | All (various) |
Spin Plenary Session
Updated on Thu, 2006-12-28 10:16. Originally created by kocolosk on 2006-07-03 19:39.| Time | Talk | Presenter |
|---|---|---|
| 14:00 | Keynote: Spin Physics ( 01:00 ) 0 files | Robert Jaffe (MIT) |
| 15:00 | STAR Transverse Spin - Results and Plans ( 00:45 ) 0 files | Steven Heppelman (Pennsylvania State University) |
| 15:45 | Coffee Break ( 00:30 ) 0 files | (Pennsylvania State University) |
| 16:15 | STAR Longitudinal Spin - Results and Plans ( 00:45 ) 0 files | Ernst Sichtermann (LBL) |