Unpolarized QED parton distribution functions in NLO

2022/12/02 by Arbuzov, A. B., Voznaya, U. E. · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2212.01124

Abstract

Perturbative solutions for unpolarized QED parton distribution and fragmentation functions are presented explicitly in the next-to-leading logarithmic approximation. The scheme of iterative solution of QED evolution equations is described in detail. Terms up to O(α³L²) are calculated analytically, where L=ln(μ_F²/m_e²) is the large logarithm which depends on the factorization energy scale μ_F≫ m_e. The results are process independent and relevant for future high-precision experiments.

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• Optimization of factorization scale in QED Drell-Yan-like processes

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