Spin PWG

This is a feed of Drupal items targeting the "Spin" Audience.

Data MC comparison

 Data and MC comparison for pion mass peak position..


Comparison with Other Results

Below you will find comparisons of the Run 6 cross section with recent Phenix results and the STAR Run 5 final result.  The lower panel is the statistical error on the Run 6 points.

2009.09.11 Test of corrected EEMC geometry: LOW_EM cuts

Test of corrected EEMC geometry: SVT and LOW_EM cuts

Monte-Carlo setup:


Preliminary Presentation (8/27/09)

The link below has the presentation for preliminary cross section result.

Cockcroft-Walton HV system

Speaker : Leonard Eun ( PSU )

Talk time : 11:20, Duration : 00:20

Linearity Check in fixed ecalgeo.g

Abstract:  A bug in the EEMC geometry has been identified.  Lines such as "Material Air isvol=0" have an unexpected (read undocumented) behavior: they create a new materi

2009.08.17 Direct photon - charge particle correlation paper GPC

proposed modification ot the title/abstract

Extracting gamma-jet cross section at forward rapidity from pp@200GeV collisions

Analysis overview

  1. Data samples, event selection, luminosity determination
  2. Isolating photon-jet events
    • Transverse shower shape analysis

Verify that the fast simulator sees all of the energy deposited in geant

Verififcation that the EEMC fast simulator sees the correct energy deposit registered by geant.

Polarizations for each fill

2009.06.22 CIPANP 2009 photon-jet proceedings

CIPANP 2009 proceedings on photon-jet study

"Photon-jet coincidence measurements
in polarized pp collisions at sqrt{s}=200 GeV

CNI P-Carbon Polarimeters 500GeV polarization profile rough show

    CNI P-Carbon Polarimeters 500GeV Polarization Profile


Use this page to hold drafts for Run 10-11 BUR written during May of 2009

2009.04.17 WSU nuclear seminar

The STAR spin program with longitudinally polarized proton beams

CNI summary analysis from fill 10373 to fill 10507

       In attachment shows the compare between polarimeter 1 and polarimeter 2 for blue (yellow) beam.  And also

Collaboration Meeting Presentation and wrap up.

 Attached is the presentation I gave at the collaboration meeting in late March.

Integral Delta G Study

 Using Werner's code I calculated A_LL for pi0 production over my eta range for 15 different integral values of Delta G.

All Errors

The plot below shows the total errors, statistical and systematic, for the cross section measurement.  The inner tick marks on the error bars represent the statistical errors.

CNI p-carbon polarimeters data comparison from fill 10300 to fill 10368

         The comparization is between blue1 and blue2, offline and onl