Soft-gluon resummations and NNNLO expansions
Nikolaos Kidonakis
TL;DR
This paper reviews soft-gluon resummation techniques and their effectiveness in approximating higher-order QCD corrections, with applications to various high-energy processes like top-antitop and W production.
Contribution
It compares recent resummation approaches and discusses fixed-order expansions up to NNNLO in the context of QCD hard-scattering processes.
Findings
Resummation approaches show varying success in approximating NNLO corrections.
Fixed-order expansions through NNNLO are applicable to multiple high-energy processes.
Recent applications include top-antitop, single-top, and W production at large transverse momentum.
Abstract
I discuss the effectiveness of soft-gluon resummations in describing higher-order corrections. I present a comparison of recent resummation approaches and their relative successes in approximating complete NNLO corrections. I also discuss fixed-order expansions through NNNLO and present some recent applications to QCD hard-scattering processes, including top-antitop pair production, single-top production, and W production at large transverse momentum.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions