کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1835816 | 1527092 | 2014 | 6 صفحه PDF | دانلود رایگان |
We make predictions for the t-differential cross section of exclusive vector meson production (EVMP) in electron–ion collisions, with the aim of comparing DGLAP evolution to CGC models. In the current picture for the high-energy nucleus, nonlinear effects need to be understood in terms of low-x gluon radiation and recombination as well as how this leads to saturation. EVMP grants experimental access to the edge region of the highly-boosted nuclear wavefunction, where the saturation scale for CGC calculations becomes inaccessible to pQCD. On the other hand, DGLAP evolution requires careful consideration of unitarity effects. The existing J/ψJ/ψ photoproduction data in ep collisions provides a baseline for these theoretical calculations. Under different small-x frameworks we obtain a measurable distinction in both the shape and normalisation of the differential cross section predictions. These considerations are relevant for heavy-ion collisions because the initial state may be further constrained, thus aiding in quantitative study of the quark–gluon plasma.
Journal: Nuclear Physics A - Volume 932, December 2014, Pages 280–285