Difference between revisions of "Mattione Kaon PID Studies eta1Prime(2300)"

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== Mass Peaks & Kinematic Fitting ==
 
== Mass Peaks & Kinematic Fitting ==
  
−
=== genr8 &eta;'<sub>1</sub>(2300) Signal ===
+
* NOTES:
−
 
+
** Plots are shown for "Missing p, VertexP4 KinFit" only.
−
* Kinematic Fit Confidence Level (Zoomed in; spike at 0 confidence is well off the top of the plot)
+
** Mass Plots: Pre-KinFit is Magenta, Post-KinFit is Teal
 +
** Kinematic Fit Confidence Level is zoomed in: spike at 0 confidence is well off the top of the plot
 +
** For the genr8 background, It wasn't possible to lineup every mass peak (without generating the recoil proton at a bogus mass), so the missing mass peak is a little off-center.
 +
** If a cut is shown, then all "Post-KinFit" plots after that cut include it.
 
{| 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="75"| Recoil p
+
!width="75"| Plot
−
!width="350"| P4 KinFit
+
!width="350"| genr8 &eta;'<sub>1</sub>(2300) Signal
−
!width="350"| VertexP4 KinFit
+
!width="350"| genr8 &eta;'<sub>1</sub>(2300) Background
−
|-
+
!width="350"| bggen Background
−
! Missing
+
|-  
−
| [[Image:Mattione_Update_09132012_KinFitConLev_MissingP_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KinFitConLev_MissingP_VertexP4KinFit_Eta2300.png|left|350px]]
+
! Confidence Level
−
|-
+
| [[Image:Mattione_Update_09132012_KinFitConLev_MissingP_VertexP4KinFit_EtaPrime2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KinFitConLev_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KinFitConLev_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
−
! Not Missing
+
|-
−
| [[Image:Mattione_Update_09132012_KinFitConLev_NoMissing_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KinFitConLev_NoMissing_VertexP4KinFit_Eta2300.png|left|350px]]
+
! K<sup>0</sup> Mass
 +
| [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_EtaPrime2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-  
 +
! Missing Mass
 +
| [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_EtaPrime2300.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-
 +
! K*(892)<sup>0</sup> Mass
 +
| [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_EtaPrime2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-
 +
! &eta;'<sub>1</sub>(2300) Mass
 +
| [[Image:Mattione_Update_09132012_EtaPrime2300Mass_MissingP_VertexP4KinFit_EtaPrime2300.png|left|350px]] || [[Image:Mattione_Update_09132012_EtaPrime2300Mass_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_EtaPrime2300Mass_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* K<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
== Cherenkov Detector Comparison ==
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
−
|-
+
−
! Missing
+
−
| [[Image:Mattione_Update_09132012_KZeroMass_MissingP_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_Eta2300.png|left|350px]]
+
−
|-
+
−
! Not Missing
+
−
| [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_VertexP4KinFit_Eta2300.png|left|350px]]
+
−
|}
+
−
<br style="clear:both;"/>
+
  
−
* Missing Mass & Missing Mass Squared (Before/after KinFit where present)
+
=== genr8 &eta;'<sub>1</sub>(2300) Background ===
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
−
|-
+
−
! Missing
+
−
| [[Image:Mattione_Update_09132012_MissingMass_MissingP_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_Eta2300.png|left|350px]]
+
−
|-
+
−
! Not Missing
+
−
| [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_VertexP4KinFit_Eta2300.png|left|350px]]
+
−
|}
+
−
<br style="clear:both;"/>
+
  
−
* K*(892)<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
* P vs. &theta; of &pi;<sup>+</sup>'s as K<sup>+</sup> candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
 +
** Plots are shown for "Missing p, VertexP4 KinFit" only.
 
{| 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="75"| Recoil p
+
!width="75"| Detector
−
!width="350"| No KinFit
+
!width="350"| % of Pions That Fail Kaon Cut
−
!width="350"| P4 KinFit
+
!width="350"| Pions That Fail Kaon Cut
−
!width="350"| VertexP4 KinFit
+
!width="350"| Pions That Survive Kaon Cut
−
|-
+
|-  
−
! Missing
+
! No CKOV
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_Eta2300.png|left|350px]]
+
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || NA || NA
−
|-
+
|-
−
! Not Missing
+
! He DC
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_VertexP4KinFit_Eta2300.png|left|350px]]
+
| 30.02% || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedHeDC_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedHeDC_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]]
 +
|-  
 +
! Gas Threshold
 +
| 36.01% || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedGasThresh_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedGasThresh_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]]
 +
|-
 +
! HBRICH
 +
| <span style="color:blue">71.93%</span> || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedRICH_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedRICH_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]]
 +
|-
 +
! LHCb RICH
 +
| <span style="color:blue">81.41%</span> || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedLHCbRICH_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedLHCbRICH_MissingP_VertexP4KinFit_EtaPrime2300bkgnd.png|left|350px]]
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* &eta;'<sub>1</sub>(2300) Invariant Mass (Before/after KinFit where present)
+
=== bggen Background ===
 +
 
 +
* P vs. &theta; of &pi;<sup>+</sup>'s as K<sup>+</sup> candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
 +
** Plots are shown for "Missing p, VertexP4 KinFit" only.
 
{| 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="75"| Recoil p
+
!width="75"| Detector
−
!width="350"| No KinFit
+
!width="350"| % of Pions That Fail Kaon Cut
−
!width="350"| P4 KinFit
+
!width="350"| Pions That Fail Kaon Cut
−
!width="350"| VertexP4 KinFit
+
!width="350"| Pions That Survive Kaon Cut
−
|-
+
|-  
−
! Missing
+
! No CKOV
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_VertexP4KinFit_Eta2300.png|left|350px]]
+
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]] || NA || NA
−
|-
+
|-
−
! Not Missing
+
! He DC
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_NoKinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_P4KinFit_Eta2300.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_VertexP4KinFit_Eta2300.png|left|350px]]
+
| 26.01% || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedHeDC_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedHeDC_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-  
 +
! Gas Threshold
 +
| 32.77% || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedGasThresh_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedGasThresh_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-
 +
! HBRICH
 +
| <span style="color:blue">51.69%</span> || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedRICH_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedRICH_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 +
|-
 +
! LHCb RICH
 +
| <span style="color:blue">64.86%</span> || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_FailedLHCbRICH_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_PassedLHCbRICH_MissingP_VertexP4KinFit_EtaPrime2300bggen.png|left|350px]]
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
=== genr8 &eta;'<sub>1</sub>(2300) Background ===
+
== Yield %'s & Signal / Background Ratios ==
−
* Generate pions instead of kaons, shift generated mass peaks so that when the kaon mass is assigned to the kaon candidates (pions), the mass peaks shift to the original signal masses.
+
* ALL data are determined in the signal region (track combinations with invariant mass outside of the signal region are ignored), and from E<sub>&gamma;</sub> = 8.5 - 9.0 GeV
−
** Note that it is impossible to get every peak to line up without generated a recoil proton with a bogus mass.  Therefore, the missing mass peak is slightly off.
+
  
−
* K<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
=== Yield %'s ===
 +
* % of generated events remaining after all cuts (including a final cut requiring that all tracks have the correct THROWN PID)
 
{| 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="75"| Recoil p
+
!width="200"| Detector / PID Cut
−
!width="350"| No KinFit
+
!width="300"| Missing p, No Fit
−
!width="350"| P4 KinFit
+
!width="300"| Missing p, P4 Fit
−
!width="350"| VertexP4 KinFit
+
!width="300"| Missing p, VertexP4 Fit
 +
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 
|-
 
|-
−
! Missing
+
! No CKOV
−
| [[Image:Mattione_Update_09132012_KZeroMass_MissingP_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 2.99356% || 2.15093% || 2.28122% || 1.4759% || 0.675309% || 0.823292%
 
|-
 
|-
−
! Not Missing
+
! He DC <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 1.42517% || 1.01972% || 1.09893% || 0.705344% || 0.320918% || 0.394798%
−
|}
+
|-
−
<br style="clear:both;"/>
+
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
−
 
+
| 1.79842% || 1.29712% || 1.36843% || 0.889158% || 0.403201% || 0.493155%
−
* Missing Mass & Missing Mass Squared (Before/after KinFit where present)
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
 
|-
 
|-
−
! Missing
+
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_MissingMass_MissingP_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 2.41858% || 1.72925% || 1.89643% || 1.2063% || 0.548876% || 0.684736%
 
|-
 
|-
−
! Not Missing
+
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 1.97084% || 1.41362% || 1.50837% || 0.974038% || 0.43972% || 0.542613%
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* K*(892)<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
=== Exclusive Kaon Cut Signal Yield Loss ===
 +
* % of pre-CKOV signal events LOST due to exclusive Kaon cut
 
{| 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="75"| Recoil p
+
!width="200"| Detector / PID Cut
−
!width="350"| No KinFit
+
!width="300"| Missing p, No Fit
−
!width="350"| P4 KinFit
+
!width="300"| Missing p, P4 Fit
−
!width="350"| VertexP4 KinFit
+
!width="300"| Missing p, VertexP4 Fit
 +
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 
|-
 
|-
−
! Missing
+
! He DC <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 52.392% || 52.5917% || 51.8271% || 52.2094% || 52.4783% || 52.0465%
 
|-
 
|-
−
! Not Missing
+
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 39.9237% || 39.6949% || 40.013% || 39.755% || 40.2939% || 40.0996%
−
|}
+
−
<br style="clear:both;"/>
+
−
 
+
−
* &eta;'<sub>1</sub>(2300) Invariant Mass (Before/after KinFit where present)
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
 
|-
 
|-
−
! Missing
+
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 19.2071% || 19.6044% || 16.8677% || 18.2673% || 18.7223% || 16.8295%
 
|-
 
|-
−
! Not Missing
+
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_NoKinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_P4KinFit_Eta2300Bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_VertexP4KinFit_Eta2300Bkgnd.png|left|350px]]
+
| 34.1639% || 34.2788% || 33.8788% || 34.004% || 34.8861% || 34.0923%
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
=== bggen Background ===
+
=== Signal / Background Ratios ===
−
 
+
* Signal / Background Ratios
−
* K<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
 
{| 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="75"| Recoil p
+
!width="200"| Detector / PID Cut
−
!width="350"| No KinFit
+
!width="300"| Missing p, No Fit
−
!width="350"| P4 KinFit
+
!width="300"| Missing p, P4 Fit
−
!width="350"| VertexP4 KinFit
+
!width="300"| Missing p, VertexP4 Fit
 +
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 
|-
 
|-
−
! Missing
+
! No CKOV
−
| [[Image:Mattione_Update_09132012_KZeroMass_MissingP_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.000403206 || 0.000341038 || 0.00289624 || 0.00218987 || ||  
 
|-
 
|-
−
! Not Missing
+
! He DC <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KZeroMass_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.00045247 || 0.000373005 || 0.00362402 || 0.0029581 ||  ||  
−
|}
+
−
<br style="clear:both;"/>
+
−
 
+
−
* Missing Mass & Missing Mass Squared (Before/after KinFit where present)
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
 
|-
 
|-
−
! Missing
+
! Gas Threshold <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_MissingMass_MissingP_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMass_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.000478885 || 0.000397661 || 0.00408972 || 0.00342077 || ||  
 
|-
 
|-
−
! Not Missing
+
! HBRICH <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_MissingMassSq_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.000543076 || 0.000454045 || 0.00443097 || 0.00421159 ||  ||  
−
|}
+
−
<br style="clear:both;"/>
+
−
 
+
−
* K*(892)<sup>0</sup> Invariant Mass (Before/after KinFit where present)
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
 
|-
 
|-
−
! Missing
+
! LHCb RICH <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.000525557 || 0.000434587 || 0.00455084 || 0.00396373 || ||  
 
|-
 
|-
−
! Not Missing
+
! He DC <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_KStarZeroMass_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.00103739 || 0.000852107 || 0.0069218 || 0.00632104 ||  ||  
−
|}
+
−
<br style="clear:both;"/>
+
−
 
+
−
* &eta;'<sub>1</sub>(2300) Invariant Mass (Before/after KinFit where present)
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| Recoil p
+
−
!width="350"| No KinFit
+
−
!width="350"| P4 KinFit
+
−
!width="350"| VertexP4 KinFit
+
 
|-
 
|-
−
! Missing
+
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.00121711 || 0.00105694 || 0.0080035 || 0.00684983 || ||  
 
|-
 
|-
−
! Not Missing
+
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_NoKinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_Eta2300Mass_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 0.00177622 || 0.00156473 || 0.0124215 || 0.00897721 || ||
 +
|-
 +
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 0.00159789 || 0.00136995 || 0.0112272 || 0.0077763 ||  ||  
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
== Cherenkov Detector Comparison: genr8 &eta;'<sub>1</sub>(2300) Background ==
+
=== Signal / Background Ratios : Improvements Over No CKOV ===
−
 
+
* Detector Signal / Background Ratio (StBR) DIVIDED BY No CKOV StBR
−
* P vs. &theta; of &pi;<sup>+</sup>'s as K<sup>+</sup> candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
+
−
** &pi;<sup>-</sup>'s as K<sup>-</sup> not shown: identical due to symmetry.
+
 
{| 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="75"| &pi;<sup>+</sup> as K<sup>+</sup>
+
!width="200"| Detector / PID Cut
−
!width="350"| No Missing, P4 KinFit
+
!width="300"| Missing p, No Fit
−
!width="350"| No Missing, VertexP4 KinFit
+
!width="300"| Missing p, P4 Fit
−
!width="350"| p Missing, P4 KinFit
+
!width="300"| Missing p, VertexP4 Fit
−
!width="350"| p Missing, VertexP4 KinFit
+
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 
|-
 
|-
−
! All
+
! He DC <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_VertexP4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_NoMissing_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_NoMissing_VertexP4KinFit_Eta2300bkgnd.png|left|350px]]
+
| 1.12218 || 1.09373 || 1.25129 || 1.35081 || ||  
 
|-
 
|-
−
! He DC
+
! Gas Threshold <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_MissingP_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_MissingP_VertexP4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_NoMissing_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_NoMissing_VertexP4KinFit_Eta2300bkgnd.png|left|350px]]
+
| 1.18769 || 1.16603 || 1.41208 || 1.56209 || ||  
 
|-
 
|-
−
! Gas Thresh.
+
! HBRICH <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_MissingP_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_MissingP_VertexP4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_NoMissing_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_NoMissing_VertexP4KinFit_Eta2300bkgnd.png|left|350px]]
+
| 1.34689 || 1.33136 || 1.5299 || 1.92321 || ||  
 
|-
 
|-
−
! RICH (Yi)
+
! LHCb RICH <br style="clear:both;"/> K: Inclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_MissingP_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_MissingP_VertexP4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_NoMissing_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_NoMissing_VertexP4KinFit_Eta2300bkgnd.png|left|350px]]
+
| 1.30344 || 1.27431 || 1.57129 || 1.81003 || ||  
 
|-
 
|-
−
! LHCb RICH
+
! He DC <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_MissingP_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_MissingP_VertexP4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_NoMissing_P4KinFit_Eta2300bkgnd.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_NoMissing_VertexP4KinFit_Eta2300bkgnd.png|left|350px]]
+
| 2.57286 || 2.49857 || 2.38993 || 2.88649 || ||  
−
|}
+
−
<br style="clear:both;"/>
+
−
 
+
−
== Cherenkov Detector Comparison: bggen Background ==
+
−
 
+
−
* P vs. &theta; of &pi;<sup>+</sup>'s as K<sup>+</sup> candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
+
−
** &pi;<sup>-</sup>'s as K<sup>-</sup> not shown: identical due to symmetry.
+
−
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
+
−
!width="75"| &pi;<sup>+</sup> as K<sup>+</sup>
+
−
!width="350"| No Missing, P4 KinFit
+
−
!width="350"| No Missing, VertexP4 KinFit
+
−
!width="350"| p Missing, P4 KinFit
+
−
!width="350"| p Missing, VertexP4 KinFit
+
 
|-
 
|-
−
! All
+
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_All_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 3.01858 || 3.09918 || 2.76341 || 3.12796 || ||  
 
|-
 
|-
−
! He DC
+
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_HeDC_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 4.40525 || 4.58813 || 4.28883 || 4.09942 || ||  
 
|-
 
|-
−
! Gas Thresh.
+
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_GasThresh_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
| 3.96295 || 4.01701 || 3.87647 || 3.55103 || ||  
−
|-
+
−
! RICH (Yi)
+
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_RICH_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
−
|-
+
−
! LHCb RICH
+
−
| [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_MissingP_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_MissingP_VertexP4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_NoMissing_P4KinFit_Eta2300bggen.png|left|350px]] || [[Image:Mattione_Update_09132012_PVsTheta_PiPlusPassKPlus_LHCbRICH_NoMissing_VertexP4KinFit_Eta2300bggen.png|left|350px]]
+
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
 +
<!--
 
== Yields %'s ==
 
== Yields %'s ==
 
* ALL yield %'s are determined in the signal region (track combinations with invariant mass outside of the signal region are ignored)
 
* ALL yield %'s are determined in the signal region (track combinations with invariant mass outside of the signal region are ignored)
Line 292: Line 253:
 
!width="350"| No Missing, VertexP4 KinFit
 
!width="350"| No Missing, VertexP4 KinFit
 
|-
 
|-
−
| a% || b% || c% || d% || e% || f%
+
| || 1.50% || 1.73% || || ||  
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
Line 298: Line 259:
 
* % of BAD reconstructed combos remaining (BAD combo: a combo where at least one track has the wrong THROWN PID)  
 
* % of BAD reconstructed combos remaining (BAD combo: a combo where at least one track has the wrong THROWN PID)  
 
{| 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="75"| Stage
+
!width="75"| Detector
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, P4 KinFit
 
!width="350"| Missing p, P4 KinFit
Line 306: Line 267:
 
!width="350"| No Missing, VertexP4 KinFit
 
!width="350"| No Missing, VertexP4 KinFit
 
|-
 
|-
−
! w/o CKOV
+
! No CKOV
−
| a% || b% || c% || d% || e% || f%
+
| || 0.61% || 0.58% || || ||  
 
|-
 
|-
 
! He DC
 
! He DC
−
| a% || b% || c% || d% || e% || f%
+
| || 0.59% || 0.56% || || ||  
 
|-
 
|-
 
! Gas Thresh.
 
! Gas Thresh.
−
| a% || b% || c% || d% || e% || f%
+
| || 0.60% || 0.57% || || ||  
 
|-
 
|-
−
! RICH (Yi)
+
! HBRICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.58% || 0.55% || || ||  
 
|-
 
|-
 
! LHCb RICH
 
! LHCb RICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.57% || 0.54% || || ||  
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
Line 327: Line 288:
 
* % of reconstructed combos remaining
 
* % of reconstructed combos remaining
 
{| 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="75"| Stage
+
!width="75"| Detector
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, P4 KinFit
 
!width="350"| Missing p, P4 KinFit
Line 335: Line 296:
 
!width="350"| No Missing, VertexP4 KinFit
 
!width="350"| No Missing, VertexP4 KinFit
 
|-
 
|-
−
! w/o CKOV
+
! No CKOV
−
| a% || b% || c% || d% || e% || f%
+
| || 0.94% || 1.01% || || ||  
 
|-
 
|-
 
! He DC
 
! He DC
−
| a% || b% || c% || d% || e% || f%
+
| || 0.67% || 0.72% || || ||  
 
|-
 
|-
 
! Gas Thresh.
 
! Gas Thresh.
−
| a% || b% || c% || d% || e% || f%
+
| || 0.60% || 0.68% || || ||  
 
|-
 
|-
−
! RICH (Yi)
+
! HBRICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.33% || <span style="color:blue">0.32%</span> || || ||  
 
|-
 
|-
 
! LHCb RICH
 
! LHCb RICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.23% || <span style="color:blue">0.23%</span> || || ||  
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
Line 356: Line 317:
 
* % of reconstructed combos remaining
 
* % of reconstructed combos remaining
 
{| 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="75"| Stage
+
!width="75"| Detector
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, No KinFit
 
!width="350"| Missing p, P4 KinFit
 
!width="350"| Missing p, P4 KinFit
Line 364: Line 325:
 
!width="350"| No Missing, VertexP4 KinFit
 
!width="350"| No Missing, VertexP4 KinFit
 
|-
 
|-
−
! w/o CKOV
+
! No CKOV
−
| a% || b% || c% || d% || e% || f%
+
| || <span style="color:red">0.026%</span> || <span style="color:green">0.0053%</span> || || ||  
 
|-
 
|-
 
! He DC
 
! He DC
−
| a% || b% || c% || d% || e% || f%
+
| || 0.023% || 0.0041% || || ||  
 
|-
 
|-
 
! Gas Thresh.
 
! Gas Thresh.
−
| a% || b% || c% || d% || e% || f%
+
| || 0.023% || 0.0043% || || ||  
 
|-
 
|-
−
! RICH (Yi)
+
! HBRICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.018% || <span style="color:blue">0.0029%</span> || || ||  
 
|-
 
|-
 
! LHCb RICH
 
! LHCb RICH
−
| a% || b% || c% || d% || e% || f%
+
| || 0.017% || <span style="color:blue">0.0026%</span> || || ||  
 
|}
 
|}
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
 +
-->

Latest revision as of 12:08, 26 September 2012

Reaction

  • γ p → η'1(2300), p
    • η'1(2300) → K*(892)0, K0_bar
      • K*(892)0 → K+, π-
        • K0_bar → π+, π-
  • Final State: p, K+, π-, π+, π-
  • Events generated with: Γη'1(2300) = 200 MeV/c2, t-slope = 5.0, 50.0 < Vertex-Z (cm) < 80.0

Analysis Overview

  • For each q = +/- particle in the reaction, all detected q = +/- tracks are tested as to whether or not they are that particle
    • e.g. If a q = + track has PID FOM > 1% for both the π+ & K+: allow both combinations (DO NOT take the best FOM as true!)
  • Maximum of 8 tracks per event (to cut down on memory spikes).
  • The analysis (cuts/histing/kinfits) is then performed on each possible track combination (events are only cut if every one of their track combinations is cut):
    • Required 45.0 < Track-Vertex-Z (cm) < 85.0
    • EXTREMELY loose mass cuts around each mass peak (typically at the histogram edges): saves time by reducing # of kinematic fits to perform
    • Require the combined FOM for PID (χ2 and NDF of all tracks summed together) be > 1%
    • Where kinematic fit: Require that the confidence level from the kinematic fit be > 1%
    • Mass cuts as illustrated.

Mass Peaks & Kinematic Fitting

  • NOTES:
    • Plots are shown for "Missing p, VertexP4 KinFit" only.
    • Mass Plots: Pre-KinFit is Magenta, Post-KinFit is Teal
    • Kinematic Fit Confidence Level is zoomed in: spike at 0 confidence is well off the top of the plot
    • For the genr8 background, It wasn't possible to lineup every mass peak (without generating the recoil proton at a bogus mass), so the missing mass peak is a little off-center.
    • If a cut is shown, then all "Post-KinFit" plots after that cut include it.
Plot genr8 η'1(2300) Signal genr8 η'1(2300) Background bggen Background
Confidence Level
Mattione Update 09132012 KinFitConLev MissingP VertexP4KinFit EtaPrime2300.png
Mattione Update 09132012 KinFitConLev MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 KinFitConLev MissingP VertexP4KinFit EtaPrime2300bggen.png
K0 Mass
Mattione Update 09132012 KZeroMass MissingP VertexP4KinFit EtaPrime2300.png
Mattione Update 09132012 KZeroMass MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 KZeroMass MissingP VertexP4KinFit EtaPrime2300bggen.png
Missing Mass
Mattione Update 09132012 MissingMass MissingP VertexP4KinFit EtaPrime2300.png
Mattione Update 09132012 MissingMass MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 MissingMass MissingP VertexP4KinFit EtaPrime2300bggen.png
K*(892)0 Mass
Mattione Update 09132012 KStarZeroMass MissingP VertexP4KinFit EtaPrime2300.png
Mattione Update 09132012 KStarZeroMass MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 KStarZeroMass MissingP VertexP4KinFit EtaPrime2300bggen.png
η'1(2300) Mass
Mattione Update 09132012 EtaPrime2300Mass MissingP VertexP4KinFit EtaPrime2300.png
Mattione Update 09132012 EtaPrime2300Mass MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 EtaPrime2300Mass MissingP VertexP4KinFit EtaPrime2300bggen.png


Cherenkov Detector Comparison

genr8 η'1(2300) Background

  • P vs. θ of π+'s as K+ candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
    • Plots are shown for "Missing p, VertexP4 KinFit" only.
Detector  % of Pions That Fail Kaon Cut Pions That Fail Kaon Cut Pions That Survive Kaon Cut
No CKOV
Mattione Update 09132012 PVsTheta PiPlusPassKPlus All MissingP VertexP4KinFit EtaPrime2300bkgnd.png
 NA NA
He DC 30.02%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedHeDC MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedHeDC MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Gas Threshold 36.01%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedGasThresh MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedGasThresh MissingP VertexP4KinFit EtaPrime2300bkgnd.png
HBRICH 71.93%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedRICH MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedRICH MissingP VertexP4KinFit EtaPrime2300bkgnd.png
LHCb RICH 81.41%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedLHCbRICH MissingP VertexP4KinFit EtaPrime2300bkgnd.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedLHCbRICH MissingP VertexP4KinFit EtaPrime2300bkgnd.png


bggen Background

  • P vs. θ of π+'s as K+ candidates ("All" means all post-analysis cuts, pre-Cherenkov cuts)
    • Plots are shown for "Missing p, VertexP4 KinFit" only.
Detector  % of Pions That Fail Kaon Cut Pions That Fail Kaon Cut Pions That Survive Kaon Cut
No CKOV
Mattione Update 09132012 PVsTheta PiPlusPassKPlus All MissingP VertexP4KinFit EtaPrime2300bggen.png
 NA NA
He DC 26.01%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedHeDC MissingP VertexP4KinFit EtaPrime2300bggen.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedHeDC MissingP VertexP4KinFit EtaPrime2300bggen.png
Gas Threshold 32.77%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedGasThresh MissingP VertexP4KinFit EtaPrime2300bggen.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedGasThresh MissingP VertexP4KinFit EtaPrime2300bggen.png
HBRICH 51.69%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedRICH MissingP VertexP4KinFit EtaPrime2300bggen.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedRICH MissingP VertexP4KinFit EtaPrime2300bggen.png
LHCb RICH 64.86%
Mattione Update 09132012 PVsTheta PiPlusPassKPlus FailedLHCbRICH MissingP VertexP4KinFit EtaPrime2300bggen.png
Mattione Update 09132012 PVsTheta PiPlusPassKPlus PassedLHCbRICH MissingP VertexP4KinFit EtaPrime2300bggen.png


Yield %'s & Signal / Background Ratios

  • ALL data are determined in the signal region (track combinations with invariant mass outside of the signal region are ignored), and from Eγ = 8.5 - 9.0 GeV

Yield %'s

  •  % of generated events remaining after all cuts (including a final cut requiring that all tracks have the correct THROWN PID)
Detector / PID Cut Missing p, No Fit Missing p, P4 Fit Missing p, VertexP4 Fit No Missing, No Fit No Missing, P4 Fit No Missing, VertexP4 Fit
No CKOV 2.99356% 2.15093% 2.28122% 1.4759% 0.675309% 0.823292%
He DC
K: 1 Exclusive 		1.42517% 1.01972% 1.09893% 0.705344% 0.320918% 0.394798%
Gas Threshold
K: 1 Exclusive 		1.79842% 1.29712% 1.36843% 0.889158% 0.403201% 0.493155%
HBRICH
K: 1 Exclusive 		2.41858% 1.72925% 1.89643% 1.2063% 0.548876% 0.684736%
LHCb RICH
K: 1 Exclusive 		1.97084% 1.41362% 1.50837% 0.974038% 0.43972% 0.542613%


Exclusive Kaon Cut Signal Yield Loss

  •  % of pre-CKOV signal events LOST due to exclusive Kaon cut
Detector / PID Cut Missing p, No Fit Missing p, P4 Fit Missing p, VertexP4 Fit No Missing, No Fit No Missing, P4 Fit No Missing, VertexP4 Fit
He DC
K: 1 Exclusive 		52.392% 52.5917% 51.8271% 52.2094% 52.4783% 52.0465%
Gas Threshold
K: 1 Exclusive 		39.9237% 39.6949% 40.013% 39.755% 40.2939% 40.0996%
HBRICH
K: 1 Exclusive 		19.2071% 19.6044% 16.8677% 18.2673% 18.7223% 16.8295%
LHCb RICH
K: 1 Exclusive 		34.1639% 34.2788% 33.8788% 34.004% 34.8861% 34.0923%


Signal / Background Ratios

  • Signal / Background Ratios
Detector / PID Cut Missing p, No Fit Missing p, P4 Fit Missing p, VertexP4 Fit No Missing, No Fit No Missing, P4 Fit No Missing, VertexP4 Fit
No CKOV 0.000403206 0.000341038 0.00289624 0.00218987
He DC
K: Inclusive 		0.00045247 0.000373005 0.00362402 0.0029581
Gas Threshold
K: Inclusive 		0.000478885 0.000397661 0.00408972 0.00342077
HBRICH
K: Inclusive 		0.000543076 0.000454045 0.00443097 0.00421159
LHCb RICH
K: Inclusive 		0.000525557 0.000434587 0.00455084 0.00396373
He DC
K: 1 Exclusive 		0.00103739 0.000852107 0.0069218 0.00632104
Gas Threshold
K: 1 Exclusive 		0.00121711 0.00105694 0.0080035 0.00684983
HBRICH
K: 1 Exclusive 		0.00177622 0.00156473 0.0124215 0.00897721
LHCb RICH
K: 1 Exclusive 		0.00159789 0.00136995 0.0112272 0.0077763


Signal / Background Ratios : Improvements Over No CKOV

  • Detector Signal / Background Ratio (StBR) DIVIDED BY No CKOV StBR
Detector / PID Cut Missing p, No Fit Missing p, P4 Fit Missing p, VertexP4 Fit No Missing, No Fit No Missing, P4 Fit No Missing, VertexP4 Fit
He DC
K: Inclusive 		1.12218 1.09373 1.25129 1.35081
Gas Threshold
K: Inclusive 		1.18769 1.16603 1.41208 1.56209
HBRICH
K: Inclusive 		1.34689 1.33136 1.5299 1.92321
LHCb RICH
K: Inclusive 		1.30344 1.27431 1.57129 1.81003
He DC
K: 1 Exclusive 		2.57286 2.49857 2.38993 2.88649
Gas Threshold
K: 1 Exclusive 		3.01858 3.09918 2.76341 3.12796
HBRICH
K: 1 Exclusive 		4.40525 4.58813 4.28883 4.09942
LHCb RICH
K: 1 Exclusive 		3.96295 4.01701 3.87647 3.55103



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