Difference between revisions of "Mattione Update 06252012"
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[[Image:Mattione_Update_06252012_ThrownPVsTheta_PiMinus.png|left|500px]] | [[Image:Mattione_Update_06252012_ThrownPVsTheta_PiMinus.png|left|500px]] | ||
[[Image:Mattione_Update_06252012_ThrownPVsTheta_Proton.png|left|500px]] | [[Image:Mattione_Update_06252012_ThrownPVsTheta_Proton.png|left|500px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | == PID == | ||
+ | * PID FOM | ||
+ | [[Image:Mattione_Update_06252012_PIDFOM_KPlus.png|left|500px]] | ||
+ | [[Image:Mattione_Update_06252012_PIDFOM_KMinus.png|left|500px]] | ||
+ | [[Image:Mattione_Update_06252012_PIDFOM_PiPlus.png|left|500px]] | ||
+ | [[Image:Mattione_Update_06252012_PIDFOM_PiMinus.png|left|500px]] | ||
<br style="clear:both;"/> | <br style="clear:both;"/> |
Revision as of 15:19, 24 June 2012
Reaction
- γ p → Y(2175), p
- Y(2175) → π+, π-, φ
- φ → K+, K-
- Y(2175) → π+, π-, φ
- Final State: p, π+, π-, K+, K-
- Events Generated using genr8 with: 9 GeV Photons, ΓY(2175) = 61 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0
Analysis Overview
- Require the combined FOM for PID (π+, π-, K+, K-) be > 1%
- Place very loose cuts on the φ invariant mass (0.8 - 1.3) and p missing mass (0.5 - 1.4): reduces # of bogus track combinations to save time / cleanup histograms
- Kinematic Fit: 4-momentum conservation: p missing mass, φ invariant mass
- Require that the confidence level from the kinematic fit be > 1%
Thrown Track Parameters
- p vs θ
PID
- PID FOM