Forward di-jet production in dilute-dense collisions

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• 作者：Elena Petreska^a ; ^b
• 关键词：Color glass condensate ; Transverse momentum dependent factorization ; High-energy factorization
• 刊名：Nuclear Physics A
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：956
• 期：Complete
• 页码：894-897
• 全文大小：154 K

文摘

We propose a factorization formula for the cross section for forward di-jet production in dilute-dense collisions. The new formula is applicable for an arbitrary value of the momentum imbalance of the two jets, k_t$k_t$. It unifies the previously derived transverse momentum dependent (TMD) factorization for small k_t$k_t$ (of the order of the saturation scale), and the High Energy Factorization (HEF) for large k_t$k_t$ (of the order of the momentum of the jets). We extend the previous TMD formula, first to finite N_c$N_c$, and then to all ranges of k_t$k_t$ by including off-shell matrix elements. We present previously unpublished analytical expressions for the TMD gluon distributions in the Golec-Biernat-Wusthoff model, and their perturbative behaviour in the McLerran-Venugopalan model. In addition, we show directly the equivalence of the HEF and the color glass condensate formulae in the dilute target approximation.