Difference between revisions of "Reconstruction, July 7, 2009"
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== Reconstruction == | == Reconstruction == | ||
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| + | * It is required that there are 4 photons showers and none are due to charged particles, this gives 6 possible combinations. | ||
| + | * Pi0 and Eta candidates are chosen as the eta-pi0 pair with the largest probability (from the fit) | ||
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| + | '''Pi0 and Eta masses''' the line in red is cutting on chi^2 < 3. | ||
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| + | [[Image:PI0MASS CHI2cut.png|300px]][[Image:ProbMax PI0 CHI2cut.png|300px]] | ||
| + | [[Image:ETAMASS CHI2cut.png|300px]][[Image:ProbMax ETA CHI2cut.png|300px]] | ||
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| + | '''resonance mass''' | ||
| + | * a combination of a0(980), a2(1320), a0(1450), a4(2000) resonances. | ||
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| + | [[Image:RESMASS CHI2cut.png|300px]] | ||
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| + | '''missing mass''' | ||
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| + | [[Image:RECMASS CHI2cut.png|300px]] | ||
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| + | '''momentum transfer''' | ||
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| + | [[Image:T CHI2cut.png|300px]] | ||
== Background == | == Background == | ||
Revision as of 01:20, 7 July 2009
Time: 11:00 EST/10:00 CST
- See GlueX Communications for detailed instructions
- ESNET Number 8542553
Contents
Documents to Review
- Reconstruction References
- Reconstruction document in progress
Tentative Agenda
- Reconstruction Physics Reactions
- Generating Background Events (Pythia: 124 μb @ 9GeV beam energy)
- Shared data sets, filtering, et c.
Discussion
Reconstruction
- It is required that there are 4 photons showers and none are due to charged particles, this gives 6 possible combinations.
- Pi0 and Eta candidates are chosen as the eta-pi0 pair with the largest probability (from the fit)
Pi0 and Eta masses the line in red is cutting on chi^2 < 3.
resonance mass
- a combination of a0(980), a2(1320), a0(1450), a4(2000) resonances.
missing mass
momentum transfer
