Hybrid kT -factorization and impact factors at NLO
A. van Hameren, Leszek Motyka, Grzegorz Ziarko
Abstract
A bstract In the hybrid k T -factorization formula, one initial-state parton momentum is space-like and carries non-vanishing transverse components, while the other is on-shell. We promote this factorization formula to next-to-leading order. Studying the partonic cross section, we identify all soft and collinear divergencies in the real and virtual contribution, and recognize that all non-cancelling ones can be attributed to PDF evolution, evolution kernel, and target impact factors. In result, we construct a framework that may be used to compute NLO impact factors in general. In particular, we recover known expressions for inclusive NLO quark-and gluon impact factor corrections.
Topics & Concepts
PhysicsFactorizationPartonKernel (algebra)Particle physicsGluonQuarkOrder (exchange)Space (punctuation)Pure mathematicsAlgorithmMathematicsLinguisticsFinanceComputer sciencePhilosophyEconomicsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions