Difference between revisions of "Mattione Update 04302014"
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(→n3pi Cut Study (Shown at Physics Meeting)) |
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* Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining) | * Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining) | ||
− | ** All is 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance | + | ** All is <span style="color:red">34361</span> combos (events) of <span style="color:red">59562</span> thrown n3pi in ~5 MegaEvent sample: <span style="color:red">57.7%</span> Acceptance |
** +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID. | ** +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID. | ||
* '''PROBLEM''': Way too many events lost due to PID cut. | * '''PROBLEM''': Way too many events lost due to PID cut. |
Revision as of 12:50, 30 April 2014
Contents
n3pi Cut Study (Shown at Physics Meeting)
- Run 9003 (no EM background), ~5 MegaEvents, searching for γp→π+π+π-(n)
- Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining)
- All is 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance
- +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID.
- PROBLEM: Way too many events lost due to PID cut.
π+ PID
- 1D Pulls of skim tracks (tThrown - tReconstructed)/σt (Reconstructed)
- With DCutAction_ThrownTopology, DCutAction_AllTruePID @ +/- 5 σ matching.
- TBT is time-based tracking.
- For track time, order of preference is: BCAL, TOF, FCAL, TBT. Histograms only filled when that detector is selected.
- Large # of FCAL matches: perhaps track/TOF matching too restrictive?
- Large # of TBT tracks: no detector match
- Uncertainties used for pull (and PID) calculations are hard-coded.
- Histograms from DHistogramAction_PID
- 2D Pulls of π+'s (tThrown - tReconstructed)/σt (Reconstructed) with no cuts except +/- 5 σ thrown matching.
- Yellow line at pull = 0.0 just to guide the eye.
- Low-θ tracks being matched to ST & BCAL hits indicates problems with hit-matching criteria.
- For track time, order of preference is: BCAL, TOF, FCAL, TBT. Histograms only filled when that detector is selected.
- Histograms from DHistogramAction_GenReconTrackComparison
Alternate n3pi Cut Study
- Run 9003 (no EM background), ~5 MegaEvents, searching for γp→π+π+π-(n)
- If no PID cut & very loose mass: (through blue: -3.0 < MM2 < 5.0, Tracking FOM +/- 5σ) 86.3% of signal, skim size = 46.6%
- If no PID cut & tighter mass: (through blue: -1.0 < MM2 < 3.0, Tracking FOM +/- 5σ) 79.0% of signal, skim size = 28.2%
- Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining)
- Originally had 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance
- +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID.
- All Reconstructed Combos (% is Skim Size)
Very Alternate n3pi Cut Study (No BCAL)
- Run 9003 (no EM background), ~5 MegaEvents, searching for γp→π+π+π-(n)
- If PID cut (no BCAL): (through blue: -2.0 < MM2 < 4.0, Tracking FOM +/- 5σ) 70.0% of signal, skim size = 21.7%
- Worse than above study (no PID cut)
- Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining)
- Originally had 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance
- +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID.
- BCAL time is ignored: for large-angle tracks, uses CDC (time-based tracking) time instead.
- All Reconstructed Combos (% is Skim Size)
Extremely Alternate n3pi Cut Study (No BCAL, KinFit)
- Run 9003 (no EM background), ~5 MegaEvents, searching for γp→π+π+π-(n)
- Reconstructed Signal Combos (DCutAction_ThrownTopology, DCutAction_AllTruePID) (% is Signal Remaining)
- Originally had 34361 combos (events) of 59562 thrown n3pi in ~5 MegaEvent sample: 57.7% Acceptance
- +/- 5σ cut on Thrown <---> Detected matching for DCutAction_AllTruePID.
- BCAL time is ignored: for large-angle tracks, uses CDC (time-based tracking) time instead.
- All Reconstructed Combos (% is Skim Size)
- Problem: No/oddly-shaped sidebands remain for sideband-subtraction analyses.