Neutral Current Contributions
J. Brunner
22/04/2015
Honda Flux
• Reference:
• Honda paper(2006)
• arxiv/astroph/0611418v3
Honda Flux (1995)
Rather consistent
Honda Flux - Energy
Flux * E3
Raw Flux
Averaged over zenith angle
Flux steeply falling with energy
νe steeper than νμ ; ν / ν almost identical
Honda Flux - Zenith
• Example plot for E=6 GeV
• Larger flux closer to horizon
Cross Sections
• From Genie, combination Oxygen, n, p
• Provided by Martijn
Cross Section
• Fraction of NC to CC
• Approaches 1/3 at high energies
MINOS
• CC event rates
– Points : without oscillations
– Histo : with oscillations
• NC event rates
– Histo
provided by Jennifer Thomas & Alexander Radovic
CHIPS
• CC event rates
– Points : without oscillations
– Histo : with oscillations
• NC event rates
– Histo
provided by Jennifer Thomas & Alexander Radovic
NOVA
• CC event rates
– Points : without oscillations
– Histo : with oscillations
• NC event rates
– Histo
provided by Jennifer Thomas & Alexander Radovic
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
• No oscillations [Meff = 1.6 Mtons , Agata]
1292
332
224
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
750 / 742
542 / 548
152 / 155
286
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
628 / 644
417 / 403
153 / 153
239
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
596 / 595
336 / 313
140 / 142
211
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
545 / 557
282 / 255
134 / 135
193
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
750 / 742
542 / 548
152 / 155
286
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
628 / 644
417 / 403
153 / 153
239
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
596 / 595
336 / 313
140 / 142
211
Events in ORCA
• Per year per GeV per cosθ bin (width 0.1)
545 / 557
282 / 255
134 / 135
193
Conclusion
• Substantial Contribution from NC and ντ
• Total event count per year and per Mton
• CC νe 2400
• NC
1450