Analysis Centre

Analysis Centre seminar: Sergey Alekhin: The VFN and FFN schemes in analysis of the heavy-quark electro- production data

Europe/Berlin
Description
Abstract: We discuss QCD analysis of the HERA heavy-quark production and inclusive DIS data. The heavy quark contribution is calculated in the general-mass variable-flavour-number (VFN) scheme based on a prescription by Buza-Matiounine-Smith-van Neerven and the heavy-quark PDFs generated from the 3-flavour ones using the NNLO matching conditions. The parton distribution functions (PDFs) are extracted from the global set of the inclusive DIS data and compared to the PDFs obtained in the variant of the fit based on the fixed-flavour-number (FFN) scheme. Predictions of the VFN scheme and the FFN scheme with account of the NNLO threshold corrections are compared to the HERA heavy-quark electro-production data. ------------------------------------- DESY Hamburg, SR 4, 14:00 ___________________________ EVO connection: Title: Analysis Centre Seminars Description: Analysis Centre Seminars Community: Terascale Phone Bridge ID: 1312410 Meeting URL: http://evo.vrvs.org/evoGate/koala.jnlp?meeting=MaMDMt222sDeDi9M98DI9a