Difference between revisions of "Mattione Update 09172012"
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== Summary == | == Summary == | ||
| + | * NOTE: Yields of φ<sub>3</sub>(1850) (p detected) (both signal and background) are somewhat inflated (it looks like the proton track uncertainties are too large, causing a spike at 0 in the pulls and 1 in the confidence level) | ||
=== genr8 Signal Events === | === genr8 Signal Events === | ||
* % of reconstructed signal events after performing a Vertex-P4 kinematic fit with a missing proton (except proton is detected where indicated) | * % of reconstructed signal events after performing a Vertex-P4 kinematic fit with a missing proton (except proton is detected where indicated) | ||
Revision as of 13:17, 17 September 2012
Contents
Cherenkov Detector Details
Helium Drift Chamber
- K/proton separation not shown but is included in the study.
- Separation between Pions & Kaons as a function of momentum.
- Theta dependence changes above 12 degrees but is not shown (not super large).
Gas Threshold (Original Design)
- From ~1 or ~0 to 10 degrees
- No K/proton separation
- Separation between Pions & Kaons as a function of momentum.
- Theta dependence is present but not shown (not super large).
- NOTE: Cut NOT performed when #sigmas < 3.0!!
HBRICH
- From ~1 or ~0 to 20 degrees
- K/proton separation not shown but is included in the study.
- Separation between Pions & Kaons as a function of momentum.
- Theta dependence is present but not shown (not super large).
LHCb RICH
- BIG IMPORTANT NOTE: These studies were performed with the parameters of the LHCb RICH AS IS (at a ~$4 million cost)
- From 0 to 20 degrees
- 99.3% K/Pi separation from 0.6 to 2.6 GeV/c
- Perfect K/Pi separation above 2.6 GeV/c
- 99.3% K/proton separation from 2.0 to 10.0 GeV/c
- Perfect K/proton separation above 10.0 GeV/c
Studies
- Kaon PID Studies: Y(2175)
- Kaon PID Studies: φ3(1850)
- Kaon PID Studies: η'(2300)
- Kaon PID Studies: h2'(2600)
Summary
- NOTE: Yields of φ3(1850) (p detected) (both signal and background) are somewhat inflated (it looks like the proton track uncertainties are too large, causing a spike at 0 in the pulls and 1 in the confidence level)
genr8 Signal Events
- % of reconstructed signal events after performing a Vertex-P4 kinematic fit with a missing proton (except proton is detected where indicated)
| Y(2175) | η'1(2300) | h'2(2600) | φ3(1850) | φ3(1850) (p detected) |
|---|---|---|---|---|
| 7.55% | 1.73% | 2.69% | 29.34% | 9.73% |
genr8 Background Events
- % of reconstructed combos remaining in the signal region after performing a Vertex-P4 kinematic fit with a missing proton (except proton is detected where indicated)
| Detector | Y(2175) | η'1(2300) | h'2(2600) | φ3(1850) | φ3(1850) (p detected) |
|---|---|---|---|---|---|
| No CKOV | 0.65% | 1.01% | 1.24% | 40.45% | 0.31% |
| He DC | 0.37% | 0.72% | 0.68% | 14.28% | 0.093% |
| Gas Thresh. | 0.59% | 0.68% | 0.60% | 4.50% | 0.045% |
| HBRICH | 0.0014% | 0.32% | 0.16% | 6.29% | 0.018% |
| LHCb RICH | 0.0014% | 0.23% | 0.042% | 0.61% | 0.00062% |
bggen Background Events
- % of reconstructed combos remaining in the signal region after performing a Vertex-P4 kinematic fit with a missing proton (except proton is detected where indicated)
| Detector | Y(2175) | η'1(2300) | h'2(2600) | φ3(1850) | φ3(1850) (p detected) |
|---|---|---|---|---|---|
| No CKOV | 0.0085% | 0.0053% | 0.046% | 1.86% | 0.012% |
| He DC | 0.0053% | 0.0041% | 0.030% | 1.17% | 0.011% |
| Gas Thresh. | 0.0080% | 0.0043% | 0.029% | 0.92% | 0.011% |
| HBRICH | 0.0031% | 0.0029% | 0.013% | 0.72% | 0.011% |
| LHCb RICH | 0.0029% | 0.0026% | 0.011% | 0.44% | 0.010% |
