O(αs2)QCD corrections to the electroproduction of hadrons with high transverse momentum

2004/11/16 by Alejandro Daleo, A. Daleo, D. de Florian +2 · 2 citations
Physics and Astronomy · #Algorithm #Computer science #DGLAP #Factorization #Fragmentation function #Hadron #High-Energy Particle Collisions Research #Mathematical physics #Nuclear physics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Renormalization #hep-ph

paper · pdf · doi:10.1103/physrevd.71.034013

published as Phys.Rev. D71 (2005) 034013 · 11 pages, LaTeX, 7 figures

arxiv created 2004/11/16 · openalex publication_date 2005/02/15 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We compute the order \ensuremathα_s² corrections to the one particle inclusive electroproduction cross section of hadrons with nonvanishing transverse momentum. We perform the full calculation analytically, and obtain the expression of the factorized (finite) cross section at this order. We compare our results with H1 data on forward production of \ensuremathπ⁰, and discuss the phenomenological implications of the rather large higher order contributions obtained in that case. Specifically, we analyze the cross section sensitivity to the factorization and renormalization scales, and to the input fragmentation functions, over the kinematical region covered by data. We conclude that the data is well described by the O(\ensuremathα_s²) predictions within the theoretical uncertainties and without the inclusion of any physics content beyond the Dokshitzer-Grivov-Lipatov-Altarelli-Parisi (DGLAP) approach.

Citations

• Fragmentation functions for pions, kaons, and protons at next-to-leading order
• Parton distributions incorporating QED contributions

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