Difference between revisions of "Mattione Update 06252012"
From GlueXWiki
| Line 47: | Line 47: | ||
* Y(2175) Invariant Mass | * Y(2175) Invariant Mass | ||
[[Image:Mattione_Update_06252012_Mass_Y2175.png|left|500px|]] | [[Image:Mattione_Update_06252012_Mass_Y2175.png|left|500px|]] | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | == Kinematic Fitting Plots == | ||
| + | |||
| + | * Confidence Level | ||
| + | [[Image:Mattione_Update_06252012_ConfidenceLevel.png|left|500px|]] | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | * Confidence Level vs. Mass | ||
| + | {| class="wikitable" | ||
| + | | [[Image:Mattione_Update_06252012_ConfidenceLevelVsPhiMass.png|left|500px|]] | ||
| + | | [[Image:Mattione_Update_06252012_ConfidenceLevelVsProtonMass.png|left|500px|]] | ||
| + | |} | ||
| + | <br style="clear:both;"/> | ||
| + | |||
| + | * Pulls | ||
| + | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
| + | !width="50"| Track | ||
| + | !width="400"| p<sub>x</sub> Pull | ||
| + | !width="400"| p<sub>y</sub> Pull | ||
| + | !width="400"| p<sub>z</sub> Pull | ||
| + | |- | ||
| + | ! γ | ||
| + | | || || [[Image:Mattione_Update_06252012_Pull_PhotonPz.png|left|400px]] | ||
| + | |- | ||
| + | ! K<sup>+</sup> | ||
| + | | [[Image:Mattione_Update_06252012_Pull_KPlusPx.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_KPlusPy.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_KPlusPz.png|left|400px]] | ||
| + | |- | ||
| + | ! K<sup>-</sup> | ||
| + | | [[Image:Mattione_Update_06252012_Pull_KMinusPx.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_KMinusPy.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_KMinusPz.png|left|400px]] | ||
| + | |- | ||
| + | ! π<sup>+</sup> | ||
| + | | [[Image:Mattione_Update_06252012_Pull_PiPlusPx.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_PiPlusPy.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_PiPlusPz.png|left|400px]] | ||
| + | |- | ||
| + | ! π<sup>-</sup> | ||
| + | | [[Image:Mattione_Update_06252012_Pull_PiMinusPx.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_PiMinusPy.png|left|400px]] || [[Image:Mattione_Update_06252012_Pull_PiMinusPz.png|left|400px]] | ||
| + | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> | ||
Revision as of 11:02, 25 June 2012
Contents
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
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PID
- PID FOM
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Initial Mass Peaks
- φ Invariant Mass
- Proton Missing Mass
- Y(2175) Invariant Mass
Kinematic Fitting Plots
- Confidence Level
- Confidence Level vs. Mass
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- Pulls
| Track | px Pull | py Pull | pz Pull |
|---|---|---|---|
| γ |  | ||
| K+ |  |
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| K- |  |
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| π+ |  |
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| π- |  |
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