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Ma, BQ; Schmidt, I; Yang, JJ; Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
Understanding the proton spin "puzzle" with a new "minimal" quark model
Source PublicationEUROPEAN PHYSICAL JOURNAL A
KeywordDeep-inelastic-scattering Isospin Symmetry-breaking Light-cone Representation Structure-function G1(x) Nn Form-factor Flavor Asymmetry Melosh Rotation Wave-function Nucleon Sea Sum-rules
AbstractWe investigate the spin structure of the nucleon in an extended Jaffe-Lipkin quark model. In addition to the conventional 3q structure, different (3q)(Q (Q) over bar) admixtures in the nucleon wave function are also taken into account. The contributions to the nucleon spin from various components of the nucleon wave function are. discussed. The effect due to the Melosh-Wigner rotation is also studied. It is shown that the Jaffe-Lipkin term is only important when antiquarks are negatively polarized. We arrive at a new "minimal" quark model, which is close to the naive quark model, in order to understand the proton spin "puzzle".
2001
ISSN1434-6001
Volume12Issue:3Pages:353-359
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13646
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMa, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
Recommended Citation
GB/T 7714
Ma, BQ,Schmidt, I,Yang, JJ,et al. Understanding the proton spin "puzzle" with a new "minimal" quark model[J]. EUROPEAN PHYSICAL JOURNAL A,2001,12(3):353-359.
APA Ma, BQ,Schmidt, I,Yang, JJ,&Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China..(2001).Understanding the proton spin "puzzle" with a new "minimal" quark model.EUROPEAN PHYSICAL JOURNAL A,12(3),353-359.
MLA Ma, BQ,et al."Understanding the proton spin "puzzle" with a new "minimal" quark model".EUROPEAN PHYSICAL JOURNAL A 12.3(2001):353-359.
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