DIS F2 data fit


15 parameter MINUIT fit

15 parameters

  1. A:
  2. B:
  3. Cval1:
  4. Csea1:
  5. Cval2:
  6. Csea2:
  7. nSLACp:
  8. nSLACd:
  9. nBCDMSp:
  10. nBCDMSpd
  11. nNMCp:
  12. nNMCd:
  13. aLambda:
  14. fPDF:
  15. nH1:

Fit functions

FCN will have three contributions:

1) chi2 of F2 measurment from SLAC, BCDMS, NMC, H1 (only P):

   (F2model-F2data)**2/Error**2

2) chi2 of Normalization factors (Un-Ki explained why they are necessary)

   (nSLACp - 1.0)**2/0.02**2 + (nBCDMSp-1.0)/0.02**2 ... + aLambda**2

3) chi2 of Cross section from Photo-prod data <--- new contribution

   (0.112*F2_LO - Cross(data))**2/Error**2 (for proton)
   (0.112*F2_LO-2.0*dpho - Cross(data))**2/Error**2 (for deutron)

Only F2 data

Including Photo-production (Proton target only)

Including Photo-production (Proton+Deutron)


20040314-Inkyu.Park@bnl.gov