Difference between revisions of "Mattione Update 06252012"
From GlueXWiki
(→Kinematic Fitting Plots) |
(→Kinematic Fitting Plots) |
||
Line 63: | Line 63: | ||
* Pulls (Confidence Level Cut at 10% for histogramming) | * Pulls (Confidence Level Cut at 10% for histogramming) | ||
− | ** μ's = ~0.0, σ's = ~1. | + | ** μ's = ~0.0, σ's = ~1.08 |
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | {| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;" | ||
!width="50"| Track | !width="50"| Track | ||
− | !width=" | + | !width="350"| p<sub>x</sub> Pull |
− | !width=" | + | !width="350"| p<sub>y</sub> Pull |
− | !width=" | + | !width="350"| p<sub>z</sub> Pull |
|- | |- | ||
! γ | ! γ | ||
− | | || || [[Image:Mattione_Update_06252012_Pull_PhotonPz.png|left| | + | | || || [[Image:Mattione_Update_06252012_Pull_PhotonPz.png|left|350px]] |
|- | |- | ||
! K<sup>+</sup> | ! K<sup>+</sup> | ||
− | | [[Image:Mattione_Update_06252012_Pull_KPlusPx.png|left| | + | | [[Image:Mattione_Update_06252012_Pull_KPlusPx.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_KPlusPy.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_KPlusPz.png|left|350px]] |
|- | |- | ||
! K<sup>-</sup> | ! K<sup>-</sup> | ||
− | | [[Image:Mattione_Update_06252012_Pull_KMinusPx.png|left| | + | | [[Image:Mattione_Update_06252012_Pull_KMinusPx.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_KMinusPy.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_KMinusPz.png|left|350px]] |
|- | |- | ||
! π<sup>+</sup> | ! π<sup>+</sup> | ||
− | | [[Image:Mattione_Update_06252012_Pull_PiPlusPx.png|left| | + | | [[Image:Mattione_Update_06252012_Pull_PiPlusPx.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_PiPlusPy.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_PiPlusPz.png|left|350px]] |
|- | |- | ||
! π<sup>-</sup> | ! π<sup>-</sup> | ||
− | | [[Image:Mattione_Update_06252012_Pull_PiMinusPx.png|left| | + | | [[Image:Mattione_Update_06252012_Pull_PiMinusPx.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_PiMinusPy.png|left|350px]] || [[Image:Mattione_Update_06252012_Pull_PiMinusPz.png|left|350px]] |
|} | |} | ||
<br style="clear:both;"/> | <br style="clear:both;"/> |
Revision as of 11:10, 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
PID
- PID FOM
Initial Mass Peaks
- φ Invariant Mass
- Proton Missing Mass
- Y(2175) Invariant Mass
Kinematic Fitting Plots
- Confidence Level
- Confidence Level vs. Mass
- Pulls (Confidence Level Cut at 10% for histogramming)
- μ's = ~0.0, σ's = ~1.08
Track | px Pull | py Pull | pz Pull |
---|---|---|---|
γ | |||
K+ | |||
K- | |||
π+ | |||
π- |