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Background issue's time-dependence

 

Run 9 Dijet det-par mass comparisons for different triggers

Taking a look at difference between detector-level dijet mass and particle-level dijet mass, plotted against the detector-level dijet mass. This is then broken into triggers.

SSD geometry modeling : listing and weight of componants

using last geometry update from Flemming (slide 2)

comments to [new] StiSst

 1) there is no need to add the constants defined in StSsdUtil/StSstConst.h

Impact of TPC Supersector Mis-alignment on HFT Tracking

There was some suspect that even there is a TPC mis-alignment, when tracking outside-in, the residual resolution is mostly dominated by the projection error, so the impact on the HFT tracking eff

W stream runQA of P14ig production (period 2 of run13)

Here is a summary of runQA for run13 period 2, p14ig produciton.

Run12 Calibration: Triggering Options

 The "TriggerOptions" slides below show two options for event samples that we could use for calibration. Given this, it was requested that I split the Option 1 plots up by trigger.

SST Sti Geometry

Version 2: 9 tubes

Beam Crossing QA period 2 of run13

The bunch crossing QA have been done for run13 period 2 data.

background-issue-cut_study-SET2-nearCone-Isolation-cut

Choose 286 runs of highghest zdc rate from run 13 period 1 production. Changed nearCone isolation cut and Et/Pt cut in both Barrel and endcap isolation.
nearCone isolation