Parton Densities and Saturation Scale from Non-Linear Evolution in DIS on Nuclei
نویسنده
چکیده
We present the numerical solution of the non-linear evolution equation for DIS on nuclei for x = 10−2 ÷ 10−7. We demonstrate that the solution to the non-linear evolution equation is quite different from the Glauber Mueller formula which was used as the initial condition for the equation. We illustrate the energy profit for performing DIS experiments on nuclei. However, it turns out that the gain is quite modest: xAu ≃ 5xproton for the same parton density. We find that the saturation scale Qs ∝ A 1 3 . For gold the saturation scale Qs,Au ≃ 1.5 GeV at x = 10−3. Such a large value leads to considerable contribution of the high density QCD phase to RHIC data and reveals itself in essential damping for both xGA and F2A. TAUP-2670-20001 February 7, 2008 e-mail: [email protected] e-mail: [email protected]
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