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题名: Helicity and transversity distributions of the nucleon and Lambda hyperon from Lambda fragmentation
作者: Ma, BQ ;  Schmidt, I ;  Soffer, J ;  Yang, JJ
刊名: PHYSICAL REVIEW D
出版日期: 2001
卷号: 64, 期号:1, 页码:-
关键词: QUARK SPIN ;  (LAMBDA)OVER-BAR POLARIZATION ;  MELOSH ROTATION ;  TENSOR CHARGES ;  Z-DECAYS ;  ASYMMETRY ;  FLAVOR ;  PROTON ;  ELECTROPRODUCTION ;  CONSTRAINTS
学科分类: Physics
通讯作者: Ma, BQ , Peking Univ, Dept Phys, Beijing 100871, Peoples R China.
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
英文摘要: 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.
收录类别: SCI
WOS记录号: WOS:000169619300040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12717
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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):-.
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