Flavor Structure of Intrinsic Nucleon Sea

Jen Chieh Peng, Wen Chen Chang, Hai Yang Cheng, Keh Fei Liu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The concept of intrinsic charm suggested by Brodsky et al. is extended to lighter quarks. Extraction of the intrinsic ū, d̄, and s̄ seas is obtained from an analysis of the d̄ − ū, s + s̄, and ū + d̄ − s −s̄ distributions. The connection between the intrinsic/extrinsic seas and the connected/disconnected seas in lattice QCD is also examined. It is shown that the connected and disconnected components for the ū(x) + d̄(x) sea can be separated. The striking x-dependence of the [s(x) + s̄(x)]/[ū(x) + d̄(x)] ratio is interpreted as an interplay between the connected and disconnected seas.

Original languageEnglish
Pages (from-to)349-354
Number of pages6
JournalFew-Body Systems
Issue number6-9
StatePublished - Oct 1 2015

Bibliographical note

Publisher Copyright:
© 2015, Springer-Verlag Wien.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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