Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-14
Nucl.Phys. A766 (2006) 142-171
Physics
High Energy Physics
High Energy Physics - Phenomenology
34 pages, 13 figures. Minor changes. Version to appear in NPA
Scientific paper
10.1016/j.nuclphysa.2005.11.018
We perform a global analysis of neutron F2n structure function data, obtained by combining proton and deuteron measurements over a large range of kinematics. From these data the lowest moments (n <= 10) of the leading twist neutron F2n structure function are extracted. Particular attention is paid to nuclear effects in the deuteron, which become increasingly important for the higher moments. Our results for the nonsinglet, isovector (p - n) combination of the leading twist moments are used to test recent lattice simulations. We also determine the lowest few moments of the higher twist contributions, and find these to be approximately isospin independent, suggesting the possible dominance of ud correlations over uu and dd in the nucleon.
Kulagin S.
Melnitchouk Wally
Osipenko Mikhail
Ricco Giovanni
Simula Silvano
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