# Neutrino data fit

Used fit procedure (Please correct me!)

• Use A, B to get Xw variable, where A and B come from the fit.
• Call grv98_lo_du(Xw,Fs,uv,dv,us,ds,str,chm,btm,top,glu), and get parton distribution values of each quarks, uv, dv, us, ds, str, chm, btm, top, glu at a given (Xw,Q2) point.
• No ccbar bbar productions are considered.
• Calculate valence quark contribution as follow:
F2val(P) = (1-G2^2) * [ uv*(Q2+Cv2(u))/(Q2+Cv1(u)) + dv*(Q2+Cv2(d))/(Q2+Cv1(d)) ],
where Cv1(u), Cv1(d), C2(u), C2(d) come from the fit.
• Calculate sea quark contribution as follow:
F2sea(P)= [ (2*us)*Q2/(Q2+Cs1(u)) + (2*ds+2*str)*Q2/(Q2+Cs1(d)) ],
where Cs1(u) and Cs1(d) come from the fit.
• Get F2(LO) from F2(P) = [ F2val(P) + F2sea(P) ] * fPDF
• For Deutreum target data (WA25), we multiply by
0.9902 + 0.3233*Xb - 2.164*Xb^2 + 6.070*Xb^3 - 8.539*Xb^4 + 4.613*Xb^5
• For Neon target data (WA59), we further multiply by
1.0963 - 0.36427*Xw - 0.27805*exp(-21.936*Xw)+2.7715*Xw^14.417
• For CCFR data, F2(Heavy)/F2(light) correction table was used to scale the CCFR data as Un-Ki directed. I.e., F2(CCFR)=F2(CCFR)/Correction
• red solid line is with ANUCL(Xb) correction (F2(iron)/F2(Deutereum), while black dotted line is with only Deutereum correction.

## WA25

Reference: Allasia et al. Zeit.Phys.C28(91)321

o F2(nucleon) from nu-deuterium interactions

## WA59

Reference: Varvell et al. Zeit.Phys.C36(91)1

o F2(nucleon) and xF3(nucleon) from neutrino-neon scattering

## CCFR

Reference: Un-Ki's thesis

o F2(nucleon) from neutrino-iron scattering

### F2(nucleon) from Nu-Iron scattering

20040314-Inkyu.Park@bnl.gov