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Helicity and transversity distributions of the nucleon and Lambda hyperon from Lambda fragmentation
Ma, BQ; Schmidt, I; Soffer, J; Yang, JJ; Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号64期号:1页码:-
摘要It is shown that Lambda -hyperon fragmentation in charged lepton deep inelastic scattering on a polarized nucleon target can provide sensitive information concerning the quark helicity and transversity distributions for both the nucleon and Lambda hyperon at large x. Numerical predictions are given for the spin transfers of the produced Lambda, when the target nucleon is polarized either longitudinally or transversely, and with the nucleon and Lambda quark distributions evaluated both in an SU(6) quark-spectator-diquark model and in a perturbative QCD based model. It is also shown that the predicted spin transfers have different behaviors for proton and neutron targets, and this can provide sensitive tests of different predictions for the quark helicity and transversity distributions of the d valence quark of the proton at large x.
部门归属Peking Univ, Dept Phys, Beijing 100871, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile; CNRS, Ctr Phys Theor, F-13288 Marseille 9, France; Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China
关键词Quark Spin (Lambda)Over-bar Polarization Melosh Rotation Tensor Charges Z-decays Asymmetry Flavor Proton Electroproduction Constraints
学科领域Physics
收录类别SCI
WOS记录号WOS:000169619300040
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12717
专题理论物理所1978-2010年知识产出
通讯作者Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
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Ma, BQ,Schmidt, I,Soffer, J,et al. Helicity and transversity distributions of the nucleon and Lambda hyperon from Lambda fragmentation[J]. PHYSICAL REVIEW D,2001,64(1):-.
APA Ma, BQ,Schmidt, I,Soffer, J,Yang, JJ,&Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China..(2001).Helicity and transversity distributions of the nucleon and Lambda hyperon from Lambda fragmentation.PHYSICAL REVIEW D,64(1),-.
MLA Ma, BQ,et al."Helicity and transversity distributions of the nucleon and Lambda hyperon from Lambda fragmentation".PHYSICAL REVIEW D 64.1(2001):-.
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