2013/07/27 by S. Alekhin, J. Blümlein, Alekhin, S. +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1307.7258
Contribution to the proceedings of the XXI international workshop on Deep-Inelastic Scattering and Related Subjects (DIS2013), Marseille, 22-26 April 2013
arxiv created 2013/07/27 · openalex publication_date 2013/07/27 · arxiv updated 2013/07/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report recent experimental and theoretical progress concerning the heavy-quark electro-production in the context of the ABM11 parton distribution function (PDF) fit. In the updated ABM11 analysis, including the recent combined HERA charm data, the MSbar-values of the c-quark mass mc(mc)=1.24 +- 0.03 (exp) +0.03-0.02(scale) +0.00-0.07 (th) and mc(mc)=1.15 +- 0.04 (exp) +0.04-0.00 (scale) are determined at NNLO and NLO, respectively. The values of mc obtained are compared to other determinations including the ones based on the various variable-flavor-number (VFN) scheme prescriptions.The VFN scheme uncertainties related to the matching of the 4(5)-flavor PDFs with the 3(4)-flavor ones are discussed.