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Published bySara Downs Modified over 2 years ago

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CC background systematics or “Once more, this time with errors” Philip Rodrigues Oxford Group Meeting 6/11/07

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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

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3 Calculating parameter errors Use mean of up/down errors ( Dc 2 = 1 ) as symmetrical error in plots TH2::SetContour(50)

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4 Result – no shower scale Flatter More consistent errors Same NC dip

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5 Shower scale No evidence for significant shower scale Cutoff in fit at 1.8

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6 Robustness 1 Still not very robust

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7 Robustness 2 Still, not too bad considering: –RO pid has smaller lever arm

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8 Conclusions Results look more convincing with correct errors Robustness problems remain

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