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题名: Spin polarizability of the nucleon in the effective field theory of heavy baryon
作者: Kumar, K. B. Vijaya ;  Ma, Yong-Liang ;  Wu, Yue-Liang
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期: 2006
卷号: 21, 期号:19-20, 页码:3947-3966
关键词: HIDDEN LOCAL SYMMETRY ;  ONE-LOOP ANALYSIS ;  UB-VERTICAL-BAR/ ;  MAGNETIC MOMENTS ;  LOW ENERGIES ;  SUM RULE ;  HQEFT ;  DECAY ;  MESON ;  QCD
学科分类: Physics
通讯作者: Kumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We have constructed a heavy baryon effective field theory with photon as an external field in accordance with the symmetry requirements similar to the heavy quark effective field theory. By treating the heavy baryon and antibaryon equally on the same footing in the effective field theory, we have calculated the spin polarizabilities gamma(i), i = 1,...,4 of the nucleon at third order and at fourth-order of the spin-dependent Compton scattering. At leading order (LO), our results agree with the corresponding results of the heavy baryon chiral perturbation theory, at the next-to-leading order (NLO) the results show a large correction to the ones in the heavy baryon chiral perturbation theory due to baryon-antibaryon coupling terms. The low-energy theorem is satisfied both at LO and at NLO. The contributions arising from the heavy baryon-antibaryon vertex were found to be significant and the results of the polarizabilities obtained from our theory is much closer to the experimental data.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000240322800003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5929
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:
Kumar, K. B. Vijaya,Ma, Yong-Liang,Wu, Yue-Liang. Spin polarizability of the nucleon in the effective field theory of heavy baryon[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2006,21(19-20):3947-3966.
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