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

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<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
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== 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 E<sub>&gamma;</sub> = 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)
 +
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
 +
!width="200"| Detector / PID Cut
 +
!width="300"| Missing p, No Fit
 +
!width="300"| Missing p, P4 Fit
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!width="300"| Missing p, VertexP4 Fit
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!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
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!width="300"| No Missing, VertexP4 Fit
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|-
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! No CKOV
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| 2.99356% || 2.15093% || 2.28122% || 1.4759% || 0.675309% || 0.823292%
 +
|-
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! He DC <br style="clear:both;"/> K: 1 Exclusive
 +
| 1.42517% || 1.01972% || 1.09893% || 0.705344% || 0.320918% || 0.394798%
 +
|-
 +
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
 +
| 1.79842% || 1.29712% || 1.36843% || 0.889158% || 0.403201% || 0.493155%
 +
|-
 +
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 2.41858% || 1.72925% || 1.89643% || 1.2063% || 0.548876% || 0.684736%
 +
|-
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! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 1.97084% || 1.41362% || 1.50837% || 0.974038% || 0.43972% || 0.542613%
 +
|}
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<br style="clear:both;"/>
 +
 +
=== Signal / Background Ratios ===
 +
* Signal / Background Ratios
 +
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
 +
!width="200"| Detector / PID Cut
 +
!width="300"| Missing p, No Fit
 +
!width="300"| Missing p, P4 Fit
 +
!width="300"| Missing p, VertexP4 Fit
 +
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 +
|-
 +
! No CKOV
 +
| 0.000403206 || 0.000341038 || 0.00289624 || 0.00218987 || 0.0109835 || 0.0240994
 +
|-
 +
! He DC <br style="clear:both;"/> K: Inclusive
 +
| 0.00045247 || 0.000373005 || 0.00362402 || 0.0029581 || 0.0147023 || 0.0299238
 +
|-
 +
! Gas Threshold <br style="clear:both;"/> K: Inclusive
 +
| 0.000478885 || 0.000397661 || 0.00408972 || 0.00342077 || 0.0155928 || 0.0301199
 +
|-
 +
! HBRICH <br style="clear:both;"/> K: Inclusive
 +
| 0.000543076 || 0.000454045 || 0.00443097 || 0.00421159 || 0.0172557 || 0.0298748
 +
|-
 +
! LHCb RICH <br style="clear:both;"/> K: Inclusive
 +
| 0.000525557 || 0.000434587 || 0.00455084 || 0.00396373 || 0.0154561 || 0.0298933
 +
|-
 +
! He DC <br style="clear:both;"/> K: 1 Exclusive
 +
| 0.00103739 || 0.000852107 || 0.0069218 || 0.00632104 || 0.014092 || 0.0577558
 +
|-
 +
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
 +
| 0.00121711 || 0.00105694 || 0.0080035 || 0.00684983 || 0.0221281 || 0.0541113
 +
|-
 +
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 0.00177622 || 0.00156473 || 0.0124215 || 0.00897721 || 0.0240975 || 0.0500911
 +
|-
 +
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 0.00159789 || 0.00136995 || 0.0112272 || 0.0077763 || 0.0214512 || 0.0476347
 +
|}
 +
<br style="clear:both;"/>
 +
 +
=== Signal / Background Ratios : Improvements Over No CKOV ===
 +
* Detector Signal / Background Ratio (StBR) DIVIDED BY No CKOV StBR
 +
{| border="1" cellpadding="2" align="left" valign="top" style="text-align:center;"
 +
!width="200"| Detector / PID Cut
 +
!width="300"| Missing p, No Fit
 +
!width="300"| Missing p, P4 Fit
 +
!width="300"| Missing p, VertexP4 Fit
 +
!width="300"| No Missing, No Fit
 +
!width="300"| No Missing, P4 Fit
 +
!width="300"| No Missing, VertexP4 Fit
 +
|-
 +
! He DC <br style="clear:both;"/> K: Inclusive
 +
| 1.12218 || 1.09373 || 1.25129 || 1.35081 || 1.33858 || 1.24168
 +
|-
 +
! Gas Threshold <br style="clear:both;"/> K: Inclusive
 +
| 1.18769 || 1.16603 || 1.41208 || 1.56209 || 1.41966 || 1.24982
 +
|-
 +
! HBRICH <br style="clear:both;"/> K: Inclusive
 +
| 1.34689 || 1.33136 || 1.5299 || 1.92321 || 1.57105 || 1.23965
 +
|-
 +
! LHCb RICH <br style="clear:both;"/> K: Inclusive
 +
| 1.30344 || 1.27431 || 1.57129 || 1.81003 || 1.40721 || 1.24041
 +
|-
 +
! He DC <br style="clear:both;"/> K: 1 Exclusive
 +
| 2.57286 || 2.49857 || 2.38993 || 2.88649 || 1.28301 || 2.39656
 +
|-
 +
! Gas Threshold <br style="clear:both;"/> K: 1 Exclusive
 +
| 3.01858 || 3.09918 || 2.76341 || 3.12796 || 2.01467 || 2.24534
 +
|-
 +
! HBRICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 4.40525 || 4.58813 || 4.28883 || 4.09942 || 2.19397 || 2.07852
 +
|-
 +
! LHCb RICH <br style="clear:both;"/> K: 1 Exclusive
 +
| 3.96295 || 4.01701 || 3.87647 || 3.55103 || 1.95304 || 1.97659
 +
|}
 +
<br style="clear:both;"/>
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 +
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== 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)
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Revision as of 17:54, 25 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%


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 0.0109835 0.0240994
He DC
K: Inclusive 		0.00045247 0.000373005 0.00362402 0.0029581 0.0147023 0.0299238
Gas Threshold
K: Inclusive 		0.000478885 0.000397661 0.00408972 0.00342077 0.0155928 0.0301199
HBRICH
K: Inclusive 		0.000543076 0.000454045 0.00443097 0.00421159 0.0172557 0.0298748
LHCb RICH
K: Inclusive 		0.000525557 0.000434587 0.00455084 0.00396373 0.0154561 0.0298933
He DC
K: 1 Exclusive 		0.00103739 0.000852107 0.0069218 0.00632104 0.014092 0.0577558
Gas Threshold
K: 1 Exclusive 		0.00121711 0.00105694 0.0080035 0.00684983 0.0221281 0.0541113
HBRICH
K: 1 Exclusive 		0.00177622 0.00156473 0.0124215 0.00897721 0.0240975 0.0500911
LHCb RICH
K: 1 Exclusive 		0.00159789 0.00136995 0.0112272 0.0077763 0.0214512 0.0476347


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 1.33858 1.24168
Gas Threshold
K: Inclusive 		1.18769 1.16603 1.41208 1.56209 1.41966 1.24982
HBRICH
K: Inclusive 		1.34689 1.33136 1.5299 1.92321 1.57105 1.23965
LHCb RICH
K: Inclusive 		1.30344 1.27431 1.57129 1.81003 1.40721 1.24041
He DC
K: 1 Exclusive 		2.57286 2.49857 2.38993 2.88649 1.28301 2.39656
Gas Threshold
K: 1 Exclusive 		3.01858 3.09918 2.76341 3.12796 2.01467 2.24534
HBRICH
K: 1 Exclusive 		4.40525 4.58813 4.28883 4.09942 2.19397 2.07852
LHCb RICH
K: 1 Exclusive 		3.96295 4.01701 3.87647 3.55103 1.95304 1.97659



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