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This study investigates the contributions of various components to the antineutrino spectrum, particularly focusing on the quasi-elastic (QEL) and resonance (Res) interactions. Through Monte Carlo simulations and systematic variations, we determine the fractions of the antineutrino spectrum attributed to these components under different configurations. We highlight the systematic errors introduced during the analysis, aiming to refine the understanding of antineutrino interactions in particle physics. Our findings emphasize the importance of considering these systematics in spectral measurements.
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qe res dis coh qe res dis coh qe res dis coh qe res dis coh n from p-,K-: n from m+ n from p-,K-: n from m+ Different components to antineutrino spectrum le010z185i le010z185i le100z200i le100z200i
qe res dis coh qe res dis coh component/all n All n From le010z185i MC to determine fraction of antineutrino spectrum corresponding to each component le010z185i Use these ratios to determine the components for the le100z200i configuration as well.
MC MC with syst MC MC with syst MC MC with syst MC MC with syst n from p-,K- n from p-,K- n from m+ n from m+ Example: qel and res components increased by 30%, pME-POT=1e19 LE pME LE pME
Example: qel and res components increased by 30%, pME-POT=1e19 Fluctuate the pME histograms to create fake data set (which now includes these systematics) and fit in usual way:
But original m+ spectra got modified by systematics, so parLE and parME are not the right parameters to look at to find out systematic error. Consider sucLE and sucME parameters, defined by: #antineutrinos from m+ predicted by fit, LE sucLE = #antineutrinos from m+ in fake data, LE #antineutrinos from m+ predicted by fit, pME sucME = #antineutrinos from m+ in fake data, pME ~6.5% systematic error in our antineutrinos from m+ in LE measurement For qel and res both increased by 30%, with 1e19 POT of pME-POT Evidently, when no systematics are added then parLE=sucLE and parME=sucME
qel and res components increased by 30%, different pME-POT 2.5e19 POT 5e19 POT 1e20 POT 7.5e19 POT
MC MC with syst n from p-,K- n from p-,K- n from m+ n from m+ qel and res components decreased by 30%, pME-POT = 1e19 LE pME LE pME
qel and res components decreased by 30%, different pME-POT 2.5e19 POT 5e19 POT 1e20 POT 7.5e19 POT