| Flavor asymmetry of the nucleon sea and the five-quark components of the nucleons. | |
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MedLine Citation:
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PMID: 21770633 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The existence of the five-quark Fock states for the intrinsic charm quark in the nucleons was suggested some time ago, but conclusive evidence is still lacking. We generalize the previous theoretical approach to the light-quark sector and study possible experimental signatures for such five-quark states. In particular, we compare the d[over ¯]-u[over ¯] and u[over ¯]+d[over ¯]-s-s[over ¯] data with the calculations based on the five-quark Fock states. The qualitative agreement between the data and the calculations is interpreted as evidence for the existence of the intrinsic light-quark sea in the nucleons. The probabilities for the |uuduu[over ¯]⟩ and |uuddd[over ¯]⟩ Fock states are also extracted. |
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Authors:
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Wen-Chen Chang; Jen-Chieh Peng |
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Publication Detail:
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Type: Journal Article Date: 2011-06-22 |
Journal Detail:
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Title: Physical review letters Volume: 106 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-07-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 252002 Citation Subset: IM |
Affiliation:
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Institute of Physics, Academia Sinica, Taipei 11529, Taiwan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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