2009/10/20 by S. Alekhin, Alekhin, S., S. Kulagin +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.0910.3762
5 pages, 3 figures, presented at DIS 2009 - QCD and Deep Inelastic Scattering, Madrid, Spain, April 26-30, 2009
arxiv created 2009/10/20 · openalex publication_date 2009/10/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform QCD fit of the nucleon strange and anti-strange sea distributions to the neutrino and anti-neutrino dimuon data by the CCFR and NuTeV collaborations, supplemented by the inclusive charged lepton-nucleon Deep Inelastic Scattering (DIS) and Drell-Yan data. The effective semi-leptonic charmed-hadron branching ratio is constrained from the inclusive charmed hadron measurements performed by the FNAL-E531 and CHORUS neutrino emulsion experiments as Bμ=(8.8±0.5)%. We obtain a strange sea suppression factor κ(20 \rm GeV2)=0.62±0.04(\rm exp.)±0.03(\rm QCD). An x-distribution of total strange sea obtained in the fit is slightly softer than the non-strange sea, and an asymmetry between strange and anti-strange quark distributions is consistent with zero (integrated over x it is equal to 0.0013± 0.0009(\rm exp.) ± 0.0002(\rm QCD) at the scale of 20 \rm GeV2).