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Systematics Sanghoon Jeon
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# of systematic parameters used for fitting : 24
NCpi+ : 1 non-QE fraction : 4 matter density : 1 intrinsic and NCpi0 background : 4 nue cross section : 4 extrapolation : 4 energy scale : 2 SK detector error : 4 systematics (# of parameters) error source corr. det. NCpi+(1) 0.30 T2K - ? o non-QE farction(4) 0.20 -1.0 (XsecMode) matter density(1) 0.06 intrinsic & NCpi0 background(4) 0.05 0.36 (intrinsic<->NCpi0) nue cross section(4) 0.0283 -0.5 (FluxMode) assumed extrapolation(4) 0.0275~ 0.0337 0.77/0.80 (PolarityMode) energy scale(2) 0.024 no corr. x SK detector error(4) 0.0208, 0.0260
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NC pi+ value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.30 0.0 10.0 111111 100 10 11 error : “Based on the approach taken by T2K, a 30% error is applied here.”– white paper
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non-QE fraction CCnQE anti-correlated param.(CCQE)
value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.2 0.0 10.0 010101 010 11 -1.0 0.0927 001 101010 0.0952 error : “In T2K near detector fits, the normalization of the non-quasielastic 2p-2h component of the cross section is fitted with a 20% error. Here a 20% error is applied to the normalization of the non-quasielastic interactions. An anti-correlated parameter is applied to the quasielastic interactions, and its error is chosen such that the normalization of the unoscillated event rate is conserved for variations of these parameters.”– white paper correlations - anti-correlated between CCQE and CCnQE backgrounds - uncorrelated between neutrinos and antineutrinos - fully correlated between the detectors
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matter density value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 3.0 0.18 0.0 10.0 111111 111 11 10 3 1.0 error : “An uncertainty of 6% is assigned based on previous estimates.”– white paper
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intrinsic and NCpi0 background
value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.05 0.0 001100 011 11 01 0.36 111111 100 10.0 10 error : “Studies of this measurement with the NuPRISM detector show an expected statistical error of 3%. A total error of 5% is considered to account for uncertainties in the different efficiency and fluxes between the near and far detectors.” – white paper correlations - correlated(0.36) between intrinsic and NCpi0 backgrounds - uncorrelated between the neutrino and antineutrino beam modes - fully correlated between the detectors
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nue cross section value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.0283 0.0 010100 011 11 -0.5 101000 10.0 error : “Here the T2K approach based on the work of Day & Mc-Farland is taken.” – white paper correlations : “The correlation between these parameters is assigned assuming there is a 2% systematic effect that is uncorrelated between neutrinos and antineutrinos and an additional 2% systematic effect with anti-correlation between neutrinos and antineutrinos.” – white paper - uncorrelated for energy range(0.0~1.0[GeV] <-> 1.0~10.0[GeV]) - anti-correlated(-0.5) between neutrinos and antineutrinos - fully correlated between the detectors
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extrapolation value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.0278 0.0 10.0 111111 011 10 01 11 0.80 0.0275 0.0286 0.77 0.0337 error : “To model this uncertainty, the T2K errors are applied as an overall uncertainty on the charged current event rate.”– white paper correlations - uncorrelated between the 1Re and 1Rmu samples - correlated(1Re-0.80, 1Rmu-0.77) between the neutrino and antineutrino beam modes - fully correlated between the detectors
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energy scale value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.024 0.0 10.0 111111 111 11 01 2 10 error : “The energy scale at Super-K is calibrated using samples of Michel electrons, pi0s and stopping cosmic muons. In T2K oscillation analyses, the energy scale error is found to be 2.4%.” – white paper correlations - fully correlated between the 1Re and 1Rmu samples - uncorrelated between the detectors
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SK detector error value error Emin Emax Flux Mode Xsec PID Type Polarity Detectors Correlations 1.0 0.0260 0.0 10.0 111111 111 10 11 01 0.0208 error : “This uncertainty is estimated based on the uncertainty evaluated for T2K.”– white paper correlations - uncorrelated between the 1Re and 1Rmu samples - uncorrelated between the detectors
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