Spectrum Analysis: FD merged fitting

K2K Spectrum Analysis: FD Merged Fitting

Some bugs are fixed on 2002/10/02.
Figures below are new, bug-fixed version.
(Error matrix is not changed)

Errors on measured spectrum are errors estimated by 1kt+SciFi merged fitting,
where error correlations between bins are taken into account
by using the error matrix obtained from the fitting.

Neutrino spectrum measured at Front Detectors: [EPS File] [GIF File]
- Box is the results of FD merged fitting,
  while histo. is the prediction of beam MC which we are using.
- The error bars are estimated by the flux fitting of FD data.
Fitting results of merged, 1kt-only and SciFi-only fitting: [EPS File] [GIF File]
- Box is the results of FD merged fitting,
  while red and blue crosses are those of 1kt-only and SciFi-only fitting, respectively.
Model dependence of fitted non-QE/QE ratio: [EPS File] [GIF File]
- Box is the results of FD merged fitting,
  while red and blue crosses are those of 1kt-only and SciFi-only fitting, respectively.
Official error matrix used in oscillation analysis: [TEXT File]
- Error of non-QE/QE ratio is enlarged to 20% by hand
  because the result of 1kt-only fitting and that of SciFi-only fitting are inconsistent.
  The descrepancy between them is +/-20% with respect to the result of merged fitting.
  We quoted this number as the systematic error on non-QE/QE ratio. See also above figure.
- Each matrix elements which is correlated to non-QE/QE ratio is also enlarged
  corresponding to enlarged error of non-QE/QE ratio.

If you have any question, please ask Issei Kato, Kyoto University (issei@scphys.kyoto-u.ac.jp).