Concerning the 'floating' mass peak and Zgg

 Objective:

Explore the pt-dependent mean mass position in data and MC and perhaps draw some conclusions about the quality of our simulations.

Details:

Hermes alignment system

Hermes ref

Congratulations to Paul Sorensen!

7 PR track plots with UPGR16 & fixed barrel

Under:

Geometry= UPGR16, 6 FGT disks , fixed barrel geometry.

Single electrons, 20 GeV ET, thrown at eta=0, 0.4, 0.8, 1.2, 1.6, 2.0


Fig 1, Z vertex=0

Elliptic flow fluctuation in collisions of deformed nuclei

Speaker : Peter Filip ( Particle Physics Lab., Dubna )


Talk time : 12:00, Duration : 00:20

06 BNL 26Sep@008 Meeting

Under:

FEE Design

W Program talk for SPIN 2008

Draft for practice talk at analysis meeting

spin goals run 9 draft talk

Draft of run 9 goals attached

Special Attention Ought to be Paid to Zgg

The collaboration has concerns about the SMD, and not without reason.  They, they SMDs, have been notoriously hard to understand and model.

Mean pT in z bins

I looked into the mean transverse momentum for pions and jets in each of my z bins. First, here’s a comparison of data (black points) and Monte Carlo (red lines) for the BJP1 trigger:

It looks good to me, so I went on to compare simulations for jet patch and minimum-bias triggers:

In hindsight, this plot makes perfect sense — the trigger hardens the pT spectrum for the jets, so each JP z bin (which integrates over 10-25 GeV) has a higher average jet p_{T} than the MB version.

Now, this 3 GeV p_{T} shift means that we’re biasing the sample in each z bin towards higher x. This is almost certainly the source of the observed trigger bias in the Monte Carlo asymmetries for π+. So, what’s the next step?

Writing and Editing Guidelines

A former classmate of mine from 6th Form College (equivalent to final two years of high school) is now a professional writer and editor.

2008.09.23 Right-left SMD tail asymmetries

Ilya Selyuzhenkov September 23, 2008

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__smdPeakDataUV_smdTailRLDiffUV_pt1gt7pt2gt5_noPi0Cu

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__smdPeakDataUV_smdTailRLDiffUV_pt1gt7pt2gt5_noPi0Cu

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_smdTailRLAsymData_pt1gt7pt2gt5_noPi0Cuts_1D

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_smdTailRLAsymData_pt1gt7pt2gt5_noPi0Cuts_1D

Left - Right Shower Shape Differences

23 Sept 2008

Status on KISTI's facility

Speaker : Hyunwoo Kim & Sang Dong Lee ( KISTI )


Talk time : 10:20, Duration : 00:15

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_ptGamma_pt1gt7pt2gt5_noPi0Cuts_1D

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_ptGamma_pt1gt7pt2gt5_noPi0Cuts_1D

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__smdResidualV_smdResidualU_pt1gt7pt2gt5_noPi0Cuts_2

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__smdResidualV_smdResidualU_pt1gt7pt2gt5_noPi0Cuts_2

2008.09.23 QA plots for maximum sided residual (bug fixed update)

Ilya Selyuzhenkov September 23, 2008

Data sets:

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_smdPeakDeltaDataFit_pt1gt7pt2gt5_noPi0Cuts

20080922_bgJetsPre1lt0_01__20080922_gJetPre1lt0_01__20080922_pp06lPre1lt0_01__counts_smdPeakDeltaDataFit_pt1gt7pt2gt5_noPi0Cuts