Run4 f K K analysis: analysis train

1
Run4 f ?KK- analysis analysis train

• Dipali Pal
• Vanderbilt University
• Light/Heavy PWG
• April 21, 2005

2
Status of f?KK- Analysis Module

• Location of codes in CVS
• offline/AnalysisTrain/CabanaBoy/DPDSMphiCutter.h
• offline/AnalysisTrain/CabanaBoy/DPDSMphiCutter
  .C
• offline/AnalysisTrain/CabanaBoy/DPDSMphiHistos
  .h
• offline/AnalysisTrain/CabanaBoy/DPDSMphiHistos
  .C
• Location of macro in CVS
• offline/AnalysisTrain/CabanaBoy/macros/analyze_phi
  kk_train.C
• Valgrind output
• https//www.phenix.bnl.gov/WWW/p/draft/dipali/pwg_
  light/Run4/21-Apr-2005/subsystem.valgrind.pid3761
• Valgrind summary file
• https//www.phenix.bnl.gov/WWW/p/draft/dipali/pwg_
  light/Run4/21-Apr-2005/valgrind_report_from_phikk_
  module_042105.txt
• Input File Type
• CNT
• Output histograms (defined in DPDSMphiHistos.C)
• 1D Invariant mass,
• 2D Invariant mass vs. mT,
• 3D mass vs. mT vs (Y12 phi)
• Job status event class (cent, z, RP) (10, 5,
  1)
• Wall time 132 sec/file, Cpu time 84 sec/file

3
Goals for May 12 analysis fest

• Invariant mass spectrum in TOF-TOF, TOF-EAST,
  EAST-EAST, WEST-WEST and Full dataset.
• Line shape analysis plots (mass centroid vs
  centrality and width vs centrality)
• mT spectra (from at least TOF-TOF combination) in
  different centralities (more bins than run2).
• v2 analysis update (from at least TOF-TOF)
• - v2 vs pT
• - v2 vs centrality
• - v2 vs pT at different centralities

4
Simulation status

• 50 M PISA events each for and - - B-field
  configuration has been generated at Vanderbilt
  Computing facility ACCRE.
• PISA ? nDST reconstruction is in progress at
  ACCRE.
• Project 58 at http//vpac17.phy.vanderbilt.edu
  /RunServer/Run04Proj/run04proj.jsp

5
What is still needed?

• EMCAL hadron PID
• -- work in progress
• SUNY Phys timing recalibration
• SUNY Chem Beam motion correction
• VU isK, isPi and isP function
  calibrations
• Hadron QA

6
First look at f?KK spectra

• ? 10K f mesons from 66 M
• events
• Presented in 24th Feb
• PWG meeting
• Using both East and
• West arms.

7
Comparison of f yields with Run2 Au-Au dataset - I

• Run2 TOF-TOF f yield per M min bias evt 1482/20
  74
• Run4 TOF-TOF f yield per M min bias evt 1496/66
  23
• ? Run4 f yield / Run2 f yield 31

? TOF pair efficiency has been reduced to about
30
8
Comparison of f yields with Run2 Au-Au dataset -
II

• MC results
• Analyzed 10M pisa events for Run4 field
  configuration and compared that with Run2.

Ratio of f mesons accepted by TOF (in PISA) in
Run4 and Run2 setup

• 45 efficiency loss in Run4 compared to Run2 by
  central arm magnetic field configurations
• Need to compare dead areas
• -- Comparisons are in
• progress at the DST level.