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摘要
Determining the dipole model unintegrated gluon distribution (UGD) is a problem of significant interest in small-x physics. Here we relate the dipole gluon distribution to the angular correlation function of the process pA -> l (l) over bar pi X-0, which provides a clean probe of the nuclear structure, and compute numerical predictions for the correlation function based on three models for the UGD: the GBW model, and BK evolution with fixed and running coupling. With all three models, the correlation exhibits an interesting double-peak structure, but the BK evolution is necessary to reproduce the near-side emission peak.
- 出版日期2013-5-2
- 单位RIKEN
