Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of Strange Sea Distributions from Neutrino-Nucleon Deep
  Inelastic Scattering   We present an analysis of the nucleon strange sea extracted from a global
Parton Distribution Function fit including the neutrino and anti-neutrino
dimuon data by the CCFR and NuTeV collaborations, the inclusive charged
lepton-nucleon Deep Inelastic Scattering and Drell-Yan data. The
(anti-)neutrino induced dimuon analysis is constrained by the semi-leptonic
charmed-hadron branching ratio $B_\mu=(8.8\pm0.5)%$, determined from the
inclusive charmed hadron measurements performed by the FNAL-E531 and CHORUS
neutrino emulsion experiments. Our analysis yields a strange sea suppression
factor $\kappa(Q^2=20{\rm GeV}^2)=0.62\pm 0.04$, the most precise value
available, an $x$-distribution of total strange sea that is slightly softer
than the non-strange sea, and an asymmetry between strange and anti-strange
quark distributions consistent with zero (integrated over $x$ it is equal to
$0.0013 \pm 0.0009$ at $Q^2=20{\rm GeV}^2$).

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The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th