Measurement of charm production in antineutrino interactions

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Measurement of charm production in antineutrino
interactions

• Gianfranca De Rosa

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Updated Draft
Measurement based on final data sample Netscan
Efficiencies ? bug fixed Location Efficiencies
? bug fixed Visible neutrino energy by correcting
Ecalo
N? 2704 N?- 93768
1m spectrometer events (for both the samples
checked spectrometer muon)
32 events used for the analysis
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Charm production in antineutrino interactions
? reconstruction cut to reduce n charm background
Estimated background 2.7 mainly due to the muon
wrong sign identification
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Systematic error

• uncertainty on normalization sample
• 10 on the n background on the Nn sample
• Lc production
• will be evaluate by using
• JETTA (3.2) and HERWIG (3.0)

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Charm production rate
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Charm production rate
Theoretical prediction
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Neutral/Charged ratio
Negligeble systematic error
To be compared with 0.7 ? 0.2 as obtained in
neutrino case