ND Sessions Summary II

1
ND Sessions Summary II

• Mike Kordosky
• UCL
• Ely, 2005

2
Nathaniel Calibration
3
Donna y-fitting
4
Donna y-fitting
5
Debdatta DIS event selection
nu
nu-bar
LE beam
nu-bar
nu
ME beam
reco energy (0-50 GeV)
6
Masaki Track Angle
LE
ME
HE
Muon track cosine

• Supression of small angle tracks in ME,HE data
• Possibly due to poor DIS model at low x
• New DIS model may fix

7
Debdatta Donna X-section
Before
After
F2(x,Q2)
Q2 (1-1000 GeV2)
8
M.K. Intranuke

• Intranuke makes large difference
• But not silver bullet

9
Tricia BMPT reweighting
Peak Position
Best Fit
Best Fit
Data
Nominal MC
1
Best Fit
Reco Neutrino Energy (GeV)
Trial

• Tried to modify BMPT parameterization to fit data
• Large modifications cause little change in peak

10
Tricia pT energy spectra
Datablack, MCred
LE
LE-10
pion pT
0 - 0.09 GeV/c 0.09 0.4 GeV/c 0.4
GeV/c
HE
ME
reco neutrino energy (0-30 GeV)
11
Mark QE, Niki clean CC
Niki Clean CC
ME Data
Mark 70 QE
ME MC
reco. neutrino energy (GeV)
reco. muon energy (GeV)
12
Mark Low Q2 suppression
K2K
ME MC
Q2 (0-2 GeV2)
ME Data
70 Pure QE
MiniBoone
Q2 (0-2 GeV2)
Q2 (0-3 GeV2)
13
Tingjun et al Nue variables
14
Niki/David NC/CC PID variables
Niki
Dave
PID parameter
15
Conclusions

• Lots of work being done understanding beam scan
• Shift in energy distribution seen in many samples
• Many things to think about
• reconstruction (Niki's talk)
• physics effects (intranuke... but consider QE
  too)
• calibration
• beam effects (pT energy, not BMPT tuning)
• Fairly good agreement in shower shape variables
  (Nue group)
• Low Q2 suppression in QE sample?
• NC/CC PID variables reasonably agree between data
  and MC
• Glad we did the beam scan!