Proper and Necessary Treatment

Towards a lattice calculation of the nucleon structure functions

“…( 2GeV 2 here) the aand -dependence is eliminated at least on the perturbative level. In the following we will assume (18), and we will denote the ` nite' part of the renormalisation constants by Z O without argument.…”

“…A linear t gives 0:012(3). For R(d) we have 0:0029(18).Next we consider a 2 . To avoid mixing problems we choose the operator O 5;f214g so the matrix element needsp =p 1 .…”

Spin-dependent structure functions of nuclei in the meson-nucleon theory

“…This has been recently extracted by deep inelastic scattering of polarized leptons off polarized nuclear targets, e.g. deuteron (Spin Muon Collaboration (SMC) [3]) and 3 He (E142 experiment [4]) and these data, combined with earlier data of the European Muon Collaboration (EMC) on the proton [1], are being currently used to check the predictions of QCD [5,6].…”

“…i=1 dp i (2π)6 δ(p 1 + p 2 + p 3 ) and in eq. (IV.21) i, j list two nucleon pairs exchanging a meson while the remaining k-th nucleon interacts with the incoming lepton, k = i, j.…”