Difference between revisions of "Mattione Study b1pi"

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−
=== Overview ===
+
== Overview ==
  
−
* Generated 100000 X(2000) -> b<sub>1</sub>&pi<sup>-</sup>; events following the instructions [http://www.jlab.org/Hall-D/software/wiki/index.php/HOWTO_simulate_and_analyze_b1pi_events here].
+
* Generated 10000 X(2000) -> b<sub>1</sub>&pi;<sup>-</sup>; events following the instructions [http://www.jlab.org/Hall-D/software/wiki/index.php/HOWTO_simulate_and_analyze_b1pi_events here].
 
* Decay chain:
 
* Decay chain:
 
<pre>
 
<pre>
Line 18: Line 18:
 
=== Event Count ===
 
=== Event Count ===
 
<pre>
 
<pre>
−
# Generated events = 100000
+
# Generated events = 10000
  
−
# Events with 2+ photons = 57866
+
# Events with 2+ photons = 9660
−
# Events with 2+ &pi;+'s = 29372
+
# Events with 2+ &pi;+'s = 7642
−
# Events with 2+ &pi;-'s = 30634
+
# Events with 2+ &pi;-'s = 8156
−
# Events with enough tracks for the X (2+ photons, 2+ &pi;+'s, 2+ &pi;-'s) = 4760
+
# Events with 2+ protons = 1040 (should only be 1 !!)
−
 
+
# Events with enough tracks for the X (2+ photons, 2+ &pi;+'s, 2+ &pi;-'s) = 6076
−
# Events with at least one &pi;0 candidate: 57866
+
−
# Events with at least one &rho;0 candidate: 58466
+
−
# Events with at least one &omega; candidate: 31012
+
−
# Events with at least one b1 candidate: 12163
+
−
# Events with at least one X(2000)0 candidate: 4760
+
 
</pre>
 
</pre>
  
−
=== Invariant Masses ===
+
[[Image:Mattione_Study_b1pi_NumTracks_Photons.gif|thumb|left|400px]]
−
* &pi;<sup>0</sup>: Filled for all events with > 1 photon, filled for all possible photon combinations (so if three photons in an event, will fill 3 times).
+
[[Image:Mattione_Study_b1pi_NumTracks_PiPluses.gif|thumb|left|400px]]
−
[[Image:Mattione_Study_b1pi_InvMass_PiZero.gif|thumb|left|400px]]
+
[[Image:Mattione_Study_b1pi_NumTracks_PiMinuses.gif|thumb|left|400px]]
 +
[[Image:Mattione_Study_b1pi_NumTracks_Protons.gif|thumb|left|400px]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* &rho;<sup>0</sup>: Filled for all events with at least one &pi;<sup>+</sup> and at least one &pi;<sup>-</sup>, filled for all possible pion combinations (so if two &pi;<sup>+</sup>'s and two &pi;<sup>-</sup>'s in an event, will fill 4 times).
+
== Invariant Masses ==
 +
[[Image:Mattione_Study_b1pi_InvMass_PiZero.gif|thumb|left|400px]]
 
[[Image:Mattione_Study_b1pi_InvMass_RhoZero.gif|thumb|left|400px]]
 
[[Image:Mattione_Study_b1pi_InvMass_RhoZero.gif|thumb|left|400px]]
 +
[[Image:Mattione_Study_b1pi_InvMass_Omega.gif|thumb|left|400px]]
 +
[[Image:Mattione_Study_b1pi_InvMass_B1Plus.gif|thumb|left|400px]]
 +
[[Image:Mattione_Study_b1pi_InvMass_X2000.gif|thumb|left|400px]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* &omega;: Filled for all events with at least: one &pi;<sup>+</sup>, one &pi;<sup>-</sup>, and two photons. Filled for all possible &rho;<sup>0</sup> combinations, but for events with multiple &pi;<sup>0</sup> candidates the &pi;<sup>0</sup> with the closest mass was chosen.
+
== Comparison of Generated and Reconstructed Tracks ==
−
[[Image:Mattione_Study_b1pi_InvMass_Omega.gif|thumb|left|400px]]
+
* NOTE: There was no observed &phi;-dependence on track reconstruction distributions.  
 +
 
 +
=== &gamma;'s ===
 +
 
 +
* p vs &theta; distributions for the generated & reconstructed photons:
 +
[[Image:Mattione_b1piStudy_Photons_GenPVsTheta.gif|thumb|left|400px|generated, 06-12-2011]]
 +
[[Image:Mattione_b1piStudy_Photons_ReconPVsTheta.gif|thumb|left|400px|reconstructed 06-12-2011]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* b<sub>1</sub>: Filled for all events with at least: two &pi;<sup>+</sup>'s, one &pi;<sup>-</sup>, and two photons.  Filled for all possible combinations of these tracks (regardless of which &pi;<sup>+</sup> formed the Rho0).
+
=== &pi;<sup>+</sup>'s ===
−
[[Image:Mattione_Study_b1pi_InvMass_B1Plus.gif|thumb|left|400px]]
+
 
 +
* p vs &theta; distributions for the generated & reconstructed &pi;<sup>+</sup>'s:
 +
[[Image:Mattione_b1piStudy_PiPluses_GenPVsTheta.gif|thumb|left|400px|generated 06-12-2011]]
 +
[[Image:Mattione_b1piStudy_PiPluses_ReconPVsTheta.gif|thumb|left|400px|reconstructed 06-12-2011]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* X(2000)<sup>0</sup>: Filled for all events with at least: two &pi;<sup>+</sup>'s, two &pi;<sup>-</sup>'s, and two photons.  Filled for all possible combinations of these tracks (regardless of which &pi;<sup>+</sup> & &pi;<sup>-</sup> formed the Rho0).
+
=== &pi;<sup>-</sup>'s ===
−
[[Image:Mattione_Study_b1pi_InvMass_X2000.gif|thumb|left|400px]]
+
 
 +
* p vs &theta; distributions for the generated & reconstructed &pi;<sup>-</sup>'s:
 +
[[Image:Mattione_b1piStudy_PiMinuses_GenPVsTheta.gif|thumb|left|400px|generated 06-12-2011]]
 +
[[Image:Mattione_b1piStudy_PiMinuses_ReconPVsTheta.gif|thumb|left|400px|reconstructed 06-12-2011]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
== Comparison of Generated and Reconstructed Tracks ==
+
=== p's ===
−
* NOTE: There was no observed &phi;-dependence on track reconstruction distributions.  
+
 
 +
* p vs &theta; distributions for the generated & reconstructed protons:
 +
[[Image:Mattione_b1piStudy_Protons_GenPVsTheta.gif|thumb|left|400px|generated 06-12-2011]]
 +
[[Image:Mattione_b1piStudy_Protons_ReconPVsTheta.gif|thumb|left|400px|reconstructed 06-12-2011]]
 +
<br style="clear:both;"/>
  
 +
<!--
 
=== Photons ===
 
=== Photons ===
  
 
* 100000 generated events, 2 photons per event: 200000 generated photons
 
* 100000 generated events, 2 photons per event: 200000 generated photons
 
* In thrown tree, the generated photons are matched with 174148 reconstructed photons.
 
* In thrown tree, the generated photons are matched with 174148 reconstructed photons.
−
** However, only 170870 reconstructed photons in the "recon" tree!
+
** However, only 170870 reconstructed photons are matched with generated photons!!
−
** Would expect at least 100000 - (200000 - 174148) = 74148 pi0 events, but get 57866 events with 2+ photons instead
+
** From matching thrown tree entries to reconstructed entries, should expect at least 100000 - (200000 - 174148) = 74148 events with 2+ photons, but get 57866 events with 2+ photons in the reconstructed tree instead.
 
*** Matching suspect, so following distributions may be suspect as well.   
 
*** Matching suspect, so following distributions may be suspect as well.   
  
−
* For each of the generated photons that were matched with reconstructed photons, the generated p vs theta distribution:
+
* For each of the generated photons that were matched with reconstructed photons, the generated p vs &theta; distribution:
−
[[Image:Mattione_b1piStudy_Photons_FoundGenPVsTheta.gif|thumb|left|600px]]
+
[[Image:Mattione_b1piStudy_Photons_FoundGenPVsTheta.gif|thumb|left|400px|sim-recon-2011-03-31]]
 +
[[Image:Mattione_b1piStudy_Photons_FoundGenPVsTheta_Comparison.gif|thumb|left|400px|code June 2, 2012]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated photons that were matched with reconstructed photons, the reconstructed p vs theta distribution:
+
* For each of the generated photons that were matched with reconstructed photons, the reconstructed p vs &theta; distribution:
−
[[Image:Mattione_b1piStudy_Photons_FoundReconPVsTheta.gif|thumb|left|600px]]
+
[[Image:Mattione_b1piStudy_Photons_FoundReconPVsTheta.gif|thumb|left|400px|sim-recon-2011-03-31]]
 +
[[Image:Mattione_b1piStudy_Photons_FoundReconPVsTheta_Comparison.gif|thumb|left|400px|code June 2, 2012]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated photons that were NOT matched with reconstructed photons, the generated p vs theta distribution:
+
* For each of the generated photons that were NOT matched with reconstructed photons, the generated p vs &theta; distribution:
−
[[Image:Mattione_b1piStudy_Photons_MissingGenPVsTheta.gif|thumb|left|600px]]
+
[[Image:Mattione_b1piStudy_Photons_MissingGenPVsTheta.gif|thumb|left|400px|sim-recon-2011-03-31]]
 +
[[Image:Mattione_b1piStudy_Photons_MissingGenPVsTheta_Comparison.gif|thumb|left|400px|code June 2, 2012]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated photons that were matched with reconstructed photons, delta-p (generated - reconstructed) vs generated p:
+
* For each of the generated photons that were matched with reconstructed photons, &Delta;p (generated - reconstructed) vs generated p:
−
[[Image:Mattione_b1piStudy_Photons_DeltaPVsP.gif|thumb|left|600px|delta-p (generated - reconstructed) vs generated p]]
+
[[Image:Mattione_b1piStudy_Photons_DeltaPVsP.gif|thumb|left|400px|sim-recon-2011-03-31, &Delta;p (generated - reconstructed) vs generated p]]
 +
[[Image:Mattione_b1piStudy_Photons_DeltaPVsP_Comparison.gif|thumb|left|400px|code June 2, 2012, &Delta;p (generated - reconstructed) vs generated p]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
Line 83: Line 104:
  
 
* 100000 generated events, 2 &pi;<sup>+</sup>'s per event: 200000 generated &pi;<sup>+</sup>'s
 
* 100000 generated events, 2 &pi;<sup>+</sup>'s per event: 200000 generated &pi;<sup>+</sup>'s
−
* In thrown tree, the generated &pi;<sup>+</sup>'s are matched with XXX reconstructed &pi;<sup>+</sup>'s.
+
* In thrown tree, the generated &pi;<sup>+</sup>'s are matched with 151234 reconstructed &pi;<sup>+</sup>'s.
−
** However, only XXX reconstructed &pi;<sup>+</sup>'s in the "recon" tree!
+
** However, only 108308 reconstructed &pi;<sup>+</sup>'s are matched with generated &pi;<sup>+</sup>'s!!
−
** Would expect at least 100000 - (200000 - XXX) = 74148 pi0 events, but get XXX events with 2+ photons instead
+
** From matching thrown tree entries to reconstructed entries, would expect at least 100000 - (200000 - 151234) = 51234 events with 2+ &pi;<sup>+</sup>'s, but get 29372 events with 2+ &pi;<sup>+</sup>'s in reconstructed tree instead.
 
*** Matching suspect, so following distributions may be suspect as well.   
 
*** Matching suspect, so following distributions may be suspect as well.   
  
−
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, the generated p vs theta distribution:
+
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, the generated p vs &theta; distribution:
 
[[Image:Mattione_b1piStudy_PiPluses_FoundGenPVsTheta.gif|thumb|left|600px]]
 
[[Image:Mattione_b1piStudy_PiPluses_FoundGenPVsTheta.gif|thumb|left|600px]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, the reconstructed p vs theta distribution:
+
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, the reconstructed p vs &theta; distribution:
 +
* SUSPECT: I bet the spike in &pi;<sup>+</sup>'s at #theta; ~= 0.77 rad are actually protons that were reconstructed with significantly lower momentum and were matched as &pi;<sup>+</sup>'s. 
 
[[Image:Mattione_b1piStudy_PiPluses_FoundReconPVsTheta.gif|thumb|left|600px]]
 
[[Image:Mattione_b1piStudy_PiPluses_FoundReconPVsTheta.gif|thumb|left|600px]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated &pi;<sup>+</sup>'s that were NOT matched with reconstructed &pi;<sup>+</sup>'s, the generated p vs theta distribution:
+
* For each of the generated &pi;<sup>+</sup>'s that were NOT matched with reconstructed &pi;<sup>+</sup>'s, the generated p vs &theta; distribution:
 
[[Image:Mattione_b1piStudy_PiPluses_MissingGenPVsTheta.gif|thumb|left|600px]]
 
[[Image:Mattione_b1piStudy_PiPluses_MissingGenPVsTheta.gif|thumb|left|600px]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
  
−
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, delta-p (generated - reconstructed) vs generated p:
+
* For each of the generated &pi;<sup>+</sup>'s that were matched with reconstructed &pi;<sup>+</sup>'s, &Delta;p (generated - reconstructed) vs generated p:
−
[[Image:Mattione_b1piStudy_PiPluses_DeltaPVsP.gif|thumb|left|600px|delta-p (generated - reconstructed) vs generated p]]
+
[[Image:Mattione_b1piStudy_PiPluses_DeltaPVsP.gif|thumb|left|600px|&Delta;p (generated - reconstructed) vs generated p]]
 
<br style="clear:both;"/>
 
<br style="clear:both;"/>
 +
 +
=== &pi;<sup>-</sup>'s ===
 +
 +
* 100000 generated events, 2 &pi;<sup>-</sup>'s per event: 200000 generated &pi;<sup>-</sup>'s
 +
* In thrown tree, the generated &pi;<sup>-</sup>'s are matched with 153185 reconstructed &pi;<sup>-</sup>'s.
 +
** However, only 107761 reconstructed &pi;<sup>-</sup>'s are matched with generated &pi;<sup>-</sup>'s!!
 +
** From matching thrown tree entries to reconstructed entries, would expect at least 100000 - (200000 - 153185) = 53185 events with 2+ &pi;<sup>-</sup>'s, but get 30634 events with 2+ &pi;<sup>-</sup>'s in reconstructed tree instead.
 +
*** Matching suspect, so following distributions may be suspect as well. 
 +
 +
* For each of the generated &pi;<sup>-</sup>'s that were matched with reconstructed &pi;<sup>-</sup>'s, the generated p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_PiMinuses_FoundGenPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated &pi;<sup>-</sup>'s that were matched with reconstructed &pi;<sup>-</sup>'s, the reconstructed p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_PiMinuses_FoundReconPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated &pi;<sup>-</sup>'s that were NOT matched with reconstructed &pi;<sup>-</sup>'s, the generated p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_PiMinuses_MissingGenPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated &pi;<sup>-</sup>'s that were matched with reconstructed &pi;<sup>-</sup>'s, &Delta;p (generated - reconstructed) vs generated p:
 +
[[Image:Mattione_b1piStudy_PiMinuses_DeltaPVsP.gif|thumb|left|600px|&Delta;p (generated - reconstructed) vs generated p]]
 +
<br style="clear:both;"/>
 +
 +
=== Protons ===
 +
 +
* 100000 generated events, 1 proton per event: 100000 generated protons
 +
* In thrown tree, the generated protons are matched with XXX reconstructed protons.
 +
** However, only XXX reconstructed protons are matched with generated protons!!
 +
** From matching thrown tree entries to reconstructed entries, should expect at least 100000 - (100000 - XXX) = XXX events with 1+ protons, but get XXX events with 1+ protons in the reconstructed tree instead.
 +
*** Matching suspect, so following distributions may be suspect as well. 
 +
 +
* For each of the generated protons that were matched with reconstructed protons, the generated p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_Protons_FoundGenPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated protons that were matched with reconstructed protons, the reconstructed p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_Protons_FoundReconPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated protons that were NOT matched with reconstructed protons, the generated p vs &theta; distribution:
 +
[[Image:Mattione_b1piStudy_Protons_MissingGenPVsTheta.gif|thumb|left|600px]]
 +
<br style="clear:both;"/>
 +
 +
* For each of the generated protons that were matched with reconstructed protons, &Delta;p (generated - reconstructed) vs generated p:
 +
[[Image:Mattione_b1piStudy_Protons_DeltaPVsP.gif|thumb|left|600px|&Delta;p (generated - reconstructed) vs generated p]]
 +
<br style="clear:both;"/>
 +
 +
-->

Latest revision as of 01:14, 12 June 2011

Overview

  • Generated 10000 X(2000) -> b1π-; events following the instructions here.
  • Decay chain:
 gamma p -> p X(2000)0
               |
               |-> b1(1235)+ π-
                    |
                    |-> ω π+
                          |
                          |-> ρ0 π0
                               |   |-> γ γ
                               |
                               |-> π+ π-

Event Count

# Generated events = 10000

# Events with 2+ photons = 9660
# Events with 2+ π+'s = 7642
# Events with 2+ π-'s = 8156
# Events with 2+ protons = 1040 (should only be 1 !!)
# Events with enough tracks for the X (2+ photons, 2+ π+'s, 2+ π-'s) = 6076
Mattione Study b1pi NumTracks Photons.gif
Mattione Study b1pi NumTracks PiPluses.gif
Mattione Study b1pi NumTracks PiMinuses.gif
Mattione Study b1pi NumTracks Protons.gif


Invariant Masses

Mattione Study b1pi InvMass PiZero.gif
Mattione Study b1pi InvMass RhoZero.gif
Mattione Study b1pi InvMass Omega.gif
Mattione Study b1pi InvMass B1Plus.gif
Mattione Study b1pi InvMass X2000.gif


Comparison of Generated and Reconstructed Tracks

  • NOTE: There was no observed φ-dependence on track reconstruction distributions.

γ's

  • p vs θ distributions for the generated & reconstructed photons:
generated, 06-12-2011
reconstructed 06-12-2011


π+'s

  • p vs θ distributions for the generated & reconstructed π+'s:
generated 06-12-2011
reconstructed 06-12-2011


π-'s

  • p vs θ distributions for the generated & reconstructed π-'s:
generated 06-12-2011
reconstructed 06-12-2011


p's

  • p vs θ distributions for the generated & reconstructed protons:
generated 06-12-2011
reconstructed 06-12-2011



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