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Spin polarizability of the nucleon in the effective field theory of heavy baryon
Kumar, K. B. Vijaya; Ma, Yong-Liang; Wu, Yue-Liang; Kumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
2006
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS A
ISSN0217-751X
卷号21期号:19-20页码:3947-3966
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Hidden Local Symmetry One-loop Analysis Ub-vertical-bar/ Magnetic Moments Low Energies Sum Rule Hqeft Decay Meson Qcd
学科领域Physics
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收录类别SCI
WOS记录号WOS:000240322800003
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5929
专题理论物理所1978-2010年知识产出
通讯作者Kumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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GB/T 7714
Kumar, K. B. Vijaya,Ma, Yong-Liang,Wu, Yue-Liang,et al. 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.
APA Kumar, K. B. Vijaya,Ma, Yong-Liang,Wu, Yue-Liang,&Kumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2006).Spin polarizability of the nucleon in the effective field theory of heavy baryon.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,21(19-20),3947-3966.
MLA Kumar, K. B. Vijaya,et al."Spin polarizability of the nucleon in the effective field theory of heavy baryon".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 21.19-20(2006):3947-3966.
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