Moments
of the proton structure function F2
The measurement of the inclusive
electron-proton scattering cross section, together with existing
world data, allowed for the evaluation of the F2 experimental moments, drastically
reducing the uncertainties related to data interpolation and providing
the most detailed dependence on Q2 of the moments up to n=8. We studied
the Q2 evolution of obtained moments, Mn(Q2), in order to estimate
higher twist contribution as a function of Q2. The small statistical
and systematic uncertainties of the CLAS data allow a precise
extraction of the higher twists and will require significant
improvements in theoretical predictions if a meaningful comparison with
these new experimental results is to be made.
The data are published in M. Osipenko et al., Phys. Rev. D67 092001 (2003).


In the Figures you can see the extracted experimental moments of
the structure function F2 and the twist separation for the second
moment M2.
Tables of obtained proton F2 structure function inelastic moments with their
statistical and systematic errors is available in ASCI format here:
ASCI Table of
M2(Q2).
ASCI Table of
M4(Q2).
ASCI Table of
M6(Q2).
ASCI Table of
M8(Q2).