The influence of direct \(D\)-meson production to the determination on the nucleon strangeness asymmetry via dimuon events in neutrino experiments

Experimentally, the production of oppositely charged dimuon events by neutrino and anti-neutrino deep inelastic scattering (DIS) is used to determine the strangeness asymmetry inside a nucleon. Here we point out that the direct production of \(D\)-meson in DIS may make substantial influence to the m...

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Bibliographic Details
Published in:arXiv.org 2008-08
Main Authors: Gao, Puze, Bo-Qiang, Ma
Format: Article
Language:English
Subjects:
Asymmetry
Inelastic scattering
Neutrinos
Particle production
Quantum chromodynamics
Quarks
Strangeness
Online Access:Get full text
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Summary:Experimentally, the production of oppositely charged dimuon events by neutrino and anti-neutrino deep inelastic scattering (DIS) is used to determine the strangeness asymmetry inside a nucleon. Here we point out that the direct production of \(D\)-meson in DIS may make substantial influence to the measurement of nucleon strange distributions. The direct \(D\)-meson production is via the heavy quark recombination (HQR) and via the light quark fragmentation from perturbative QCD (LQF-P). To see the influence precisely, we compute the direct \(D\)-meson productions via HQR and LQF-P quantitatively and estimate their corrections to the analysis of the strangeness asymmetry. The results show that HQR has stronger effect than LQF-P does, and the former may influence the experimental determination of the nucleon strangeness asymmetry.
ISSN:2331-8422
DOI:10.48550/arxiv.0808.3527