High-Energy QCD factorization from DIS to pA collisions

Abstract

The high-energy QCD factorization for Deep Inelastic Scattering and for proton-nucleus collisions using Wilson line formalism and factorization in rapidity is discussed. We show that in DIS the factorization in rapidity reduces to the $k_{\mathrm{T}}$-factorization when the 2-gluon approximation is applied, provided that the composite Wilson line operator is used in the high-energy Operator Product Expansion. We then show that the inclusive forward cross-section in proton-nucleus collisions factorizes in parton distribution functions, fragmentation functions and dipole gluon distribution function at one-loop level.

8 pages, 4 figures, proceedings of the "QCD Evolution Workshop", May 14 - 17, 2012, Thomas Jefferson National Accelerator Facility, Newport News, VA

References in corpus (5)

• NLO evolution of color dipoles
• Photon impact factor and $k_T$-factorization for DIS in the next-to-leading order
• Photon impact factor in the next-to-leading order
• NLO evolution of color dipoles in N=4 SYM
• Conformal kernel for NLO BFKL equation in $\mathcal{N}$=4 SYM

Cited by in corpus (7)

• Study of $J/\psi$ production and cold nuclear matter effects in $p$Pb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• Study of ${\rm Y}$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• Study of $\psi (2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$
• Study of ${\rm Y}$ production in $p$Pb collisions at $\sqrt{s_{NN}}=8.16$ TeV
• An overview of experimental results from ultra-relativistic heavy-ion collisions at the CERN LHC: hard probes
• Search for contact interactions using the inclusive jet pT spectrum in pp collisions at sqrt(s) = 7 TeV
• QCD Evolution Workshop: Introduction