Difference between revisions of "Mattione Update 06252012"
From GlueXWiki
Line 15: | Line 15: | ||
* p vs θ | * p vs θ | ||
{| class="wikitable" | {| class="wikitable" | ||
− | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_KPlus.png|left| | + | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_KPlus.png|left|400px|]] |
− | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_KMinus.png|left| | + | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_KMinus.png|left|400px|]] |
| | | | ||
|- | |- | ||
− | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_PiPlus.png|left| | + | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_PiPlus.png|left|400px|]] |
− | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_PiMinus.png|left| | + | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_PiMinus.png|left|400px|]] |
− | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_Proton.png|left| | + | | [[Image:Mattione_Update_06252012_ThrownPVsTheta_Proton.png|left|400px|]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> |
Revision as of 10:36, 25 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