Difference between revisions of "Mattione Study b1pi"
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− | * Generated | + | == Overview == |
+ | |||
+ | * Generated 10000 X(2000) -> b<sub>1</sub>π<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> | ||
gamma p -> p X(2000)0 | gamma p -> p X(2000)0 | ||
| | | | ||
− | |-> b1(1235)+ pi- | + | |-> b1(1235)+ π- |
| | | | ||
− | |-> omega pi+ | + | |-> ω π+ |
| | | | ||
− | |-> | + | |-> ρ0 π0 |
− | | |-> gamma gamma | + | | |-> γ γ |
| | | | ||
− | |-> pi+ pi- | + | |-> π+ π- |
</pre> | </pre> | ||
− | === | + | === Event Count === |
− | + | <pre> | |
− | + | # 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 | ||
+ | </pre> | ||
− | + | [[Image:Mattione_Study_b1pi_NumTracks_Photons.gif|thumb|left|400px]] | |
− | [[Image: | + | [[Image:Mattione_Study_b1pi_NumTracks_PiPluses.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;"/> | ||
− | + | == Invariant Masses == | |
− | [[Image:Mattione_Study_b1pi_InvMass_B1Plus.gif|thumb|left| | + | [[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_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;"/> | ||
+ | |||
+ | == 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: |
− | [[Image: | + | [[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;"/> | ||
− | + | === π<sup>+</sup>'s === | |
− | < | + | |
− | </ | + | * p vs θ distributions for the generated & reconstructed π<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;"/> | ||
+ | |||
+ | === π<sup>-</sup>'s === | ||
+ | |||
+ | * p vs θ distributions for the generated & reconstructed π<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;"/> | ||
+ | |||
+ | === p's === | ||
+ | |||
+ | * p vs θ 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 === | ||
+ | |||
+ | * 100000 generated events, 2 photons per event: 200000 generated photons | ||
+ | * In thrown tree, the generated photons are matched with 174148 reconstructed photons. | ||
+ | ** However, only 170870 reconstructed photons are matched with generated photons!! | ||
+ | ** 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. | ||
+ | |||
+ | * For each of the generated photons that were matched with reconstructed photons, the generated p vs θ distribution: | ||
+ | [[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;"/> | ||
+ | |||
+ | * For each of the generated photons that were matched with reconstructed photons, the reconstructed p vs θ distribution: | ||
+ | [[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;"/> | ||
+ | |||
+ | * For each of the generated photons that were NOT matched with reconstructed photons, the generated p vs θ distribution: | ||
+ | [[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;"/> | ||
+ | |||
+ | * For each of the generated photons that were matched with reconstructed photons, Δp (generated - reconstructed) vs generated p: | ||
+ | [[Image:Mattione_b1piStudy_Photons_DeltaPVsP.gif|thumb|left|400px|sim-recon-2011-03-31, Δp (generated - reconstructed) vs generated p]] | ||
+ | [[Image:Mattione_b1piStudy_Photons_DeltaPVsP_Comparison.gif|thumb|left|400px|code June 2, 2012, Δp (generated - reconstructed) vs generated p]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | === π<sup>+</sup>'s === | ||
+ | |||
+ | * 100000 generated events, 2 π<sup>+</sup>'s per event: 200000 generated π<sup>+</sup>'s | ||
+ | * In thrown tree, the generated π<sup>+</sup>'s are matched with 151234 reconstructed π<sup>+</sup>'s. | ||
+ | ** However, only 108308 reconstructed π<sup>+</sup>'s are matched with generated π<sup>+</sup>'s!! | ||
+ | ** From matching thrown tree entries to reconstructed entries, would expect at least 100000 - (200000 - 151234) = 51234 events with 2+ π<sup>+</sup>'s, but get 29372 events with 2+ π<sup>+</sup>'s in reconstructed tree instead. | ||
+ | *** Matching suspect, so following distributions may be suspect as well. | ||
+ | |||
+ | * For each of the generated π<sup>+</sup>'s that were matched with reconstructed π<sup>+</sup>'s, the generated p vs θ distribution: | ||
+ | [[Image:Mattione_b1piStudy_PiPluses_FoundGenPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>+</sup>'s that were matched with reconstructed π<sup>+</sup>'s, the reconstructed p vs θ distribution: | ||
+ | * SUSPECT: I bet the spike in π<sup>+</sup>'s at #theta; ~= 0.77 rad are actually protons that were reconstructed with significantly lower momentum and were matched as π<sup>+</sup>'s. | ||
+ | [[Image:Mattione_b1piStudy_PiPluses_FoundReconPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>+</sup>'s that were NOT matched with reconstructed π<sup>+</sup>'s, the generated p vs θ distribution: | ||
+ | [[Image:Mattione_b1piStudy_PiPluses_MissingGenPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>+</sup>'s that were matched with reconstructed π<sup>+</sup>'s, Δp (generated - reconstructed) vs generated p: | ||
+ | [[Image:Mattione_b1piStudy_PiPluses_DeltaPVsP.gif|thumb|left|600px|Δp (generated - reconstructed) vs generated p]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | === π<sup>-</sup>'s === | ||
+ | |||
+ | * 100000 generated events, 2 π<sup>-</sup>'s per event: 200000 generated π<sup>-</sup>'s | ||
+ | * In thrown tree, the generated π<sup>-</sup>'s are matched with 153185 reconstructed π<sup>-</sup>'s. | ||
+ | ** However, only 107761 reconstructed π<sup>-</sup>'s are matched with generated π<sup>-</sup>'s!! | ||
+ | ** From matching thrown tree entries to reconstructed entries, would expect at least 100000 - (200000 - 153185) = 53185 events with 2+ π<sup>-</sup>'s, but get 30634 events with 2+ π<sup>-</sup>'s in reconstructed tree instead. | ||
+ | *** Matching suspect, so following distributions may be suspect as well. | ||
+ | |||
+ | * For each of the generated π<sup>-</sup>'s that were matched with reconstructed π<sup>-</sup>'s, the generated p vs θ distribution: | ||
+ | [[Image:Mattione_b1piStudy_PiMinuses_FoundGenPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>-</sup>'s that were matched with reconstructed π<sup>-</sup>'s, the reconstructed p vs θ distribution: | ||
+ | [[Image:Mattione_b1piStudy_PiMinuses_FoundReconPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>-</sup>'s that were NOT matched with reconstructed π<sup>-</sup>'s, the generated p vs θ distribution: | ||
+ | [[Image:Mattione_b1piStudy_PiMinuses_MissingGenPVsTheta.gif|thumb|left|600px]] | ||
+ | <br style="clear:both;"/> | ||
+ | |||
+ | * For each of the generated π<sup>-</sup>'s that were matched with reconstructed π<sup>-</sup>'s, Δp (generated - reconstructed) vs generated p: | ||
+ | [[Image:Mattione_b1piStudy_PiMinuses_DeltaPVsP.gif|thumb|left|600px|Δp (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 θ 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 θ 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 θ 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, Δp (generated - reconstructed) vs generated p: | ||
+ | [[Image:Mattione_b1piStudy_Protons_DeltaPVsP.gif|thumb|left|600px|Δp (generated - reconstructed) vs generated p]] | ||
+ | <br style="clear:both;"/> | ||
− | + | --> | |
− | + |
Latest revision as of 01:14, 12 June 2011
Contents
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
Invariant Masses
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:
π+'s
- p vs θ distributions for the generated & reconstructed π+'s:
π-'s
- p vs θ distributions for the generated & reconstructed π-'s:
p's
- p vs θ distributions for the generated & reconstructed protons: