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Overview of the formalism Predictions for nuclear PDFs Predictions for impact parameter dependent nuclear PDFs Nuclear diffractive PDFs Back to V.Guzey at JLab |
Nuclear diffractive PDFsThe leading twist theory of nuclear shadowing enables us to predict next-to-leading order nuclear diffractive parton distributions fj/AD(3)(xP,Q2,&beta) and nuclear diffractive structure functions F2AD(3)(xP,Q2,&beta) for 10-4 &le xP &le 0.1, 4 &le Q2 &le 16,000 GeV2, and 0.01 &le &beta &le 1.Fortran codes and required data files with grids for nuclear diffractive PDFs and structure functions can be found in the end of this page. Predictions for nuclear shadowing for nuclear diffractive PDFs are obtained by generalizing the results for the ususual nuclear PDFs. The master equation for nuclear diffractive PDFs reads: An example of our predictions is presented below, where we plot the ratio of the nuclear to nucleon diffractive PDFs, fj/AD(3)/(Afj/ND(3)), as a function of &beta (left panels) and xP (right panels) at fixed input Q02=4 GeV2. For convenience of the use, we performed the DGLAP evolution and tabulated our results as a three-dimensional grid in xP, Q2, and &beta . Using a simple Fortran code, one can interpolate between the grid points and thus obtain the following ratios of NLO quantities: fj/AD(3)/(Afj/ND(3)), F2AD(3)/(AF2ND(3)), fj/AD(3)/A, and F2AD(3)/A at any desired xP, Q2, and &beta in the interval 10-4 &le xP &le 0.1, 4 &le Q2 &le 16,000 GeV2, and 0.01 &le &beta &le 1. The tables below contain the data files with grids and the Fortran codes that do the interpolation: the first table is for the ratios of the nuclear to free nucleons PDFs, fj/AD(3)/(Afj/ND(3)) and F2AD(3)/(AF2ND(3)); the second table is for the absolute values divided by A, fj/AD(3)/A and F2AD(3)/A. Fortran codes and grids for fj/AD(3)/(Afj/ND(3)) and F2AD(3)/(AF2ND(3))
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