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CC background systematics or “Once more, this time with errors” Philip Rodrigues Oxford Group Meeting 6/11/07
2 Error error MC stats similar to data stats – need to add in MC error to c 2 : Changes best fit point, because where S CC and S NC are what we’re trying to find
3 Calculating parameter errors Use mean of up/down errors ( Dc 2 = 1 ) as symmetrical error in plots TH2::SetContour(50)
4 Result – no shower scale Flatter More consistent errors Same NC dip
5 Shower scale No evidence for significant shower scale Cutoff in fit at 1.8
6 Robustness 1 Still not very robust
7 Robustness 2 Still, not too bad considering: –RO pid has smaller lever arm
8 Conclusions Results look more convincing with correct errors Robustness problems remain
Data/Monte Carlo disagreement for Rustem’s Signal Fluctuation variable in the Far Detector (Working Title) Philip Rodrigues Oxford MINOS Group Meeting.
FD Crosstalk or A disappointing lack of pretty colours Philip Rodrigues Oxford MINOS Meeting 20 May 2008.
CC Background Systematic 3 Philip Rodrigues Oxford Group Meeting 30/10/07.
CC PID Task Force Status Update Philip Rodrigues CC Phone Meeting 6 Dec 07.
NC Energy Estimators Philip Rodrigues. Issues Need to choose what true E to estimate. Options are: –showerEnergy –trueVisibleE –y*E_nu Need to choose.
Possible directions for NC sensitivity Philip Rodrigues April 2008 Minos collaboration meeting, Sussex.
NC Energy Estimators 2 Philip Rodrigues 27/03/2007.
Recent Results from Super-Kamiokande on Atmospheric Neutrino Measurements Choji Saji ICRR,Univ. of Tokyo for the Super-Kamiokande collaboration ICHEP 2004,
1 Cross-section systematics Broad aims of this study: –Evaluate the effect of cross-section uncertainties on the all-event CC analysis (selection efficiencies,
Effect of b-tagging Scale Factors on M bb invariant mass distribution Ricardo Gonçalo.
1 Methods of Experimental Particle Physics Alexei Safonov Lecture #22.
Reconstruction Issues in Cosmic Ray Muons Maury Goodman/Gavril Giurgiu & Jurgen Reichenbacher.
1 Semiexclusive semileptonic B->charmdecays C. Gatto - INFN Napoli A. Mazzacane - Universita’ di Napoli April 10, 2003.
Some answers to the questions/comments at the Heavy/Light presentation of March 17, Outline : 1) Addition of the id quadrant cut (slides 2-3); 2)
July 2001 Snowmass A New Measurement of from KTeV Introduction The KTeV Detector Analysis of 1997 Data Update of Previous Result Conclusions.
1 Using the pHE data to measure the beam e ’s from + decay David Jaffe and Pedro Ochoa March 13 th 2007 Introduction Antineutrino selection Feasibility.
Selection: i) Used “basic cuts” described in my NuBarPID talk (slide 3). 74.4% of CC events pass this cut. ii) Used David’s PID cut at -0.2 to remove NC.
Hypothesis Testing Steps of a Statistical Significance Test. 1. Assumptions Type of data, form of population, method of sampling, sample size.
1 Using the pHE data to measure the beam e ’s from + decay David Jaffe and Pedro Ochoa April 12 th 2007 Reminder Systematic from background Horn.
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