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Kumar, K. B. Vijaya; Ma, Yong-Liang; Wu, Yue-Liang; Kumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Spin polarizability of the nucleon in the effective field theory of heavy baryon
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS A
KeywordHidden Local Symmetry One-loop Analysis Ub-vertical-bar/ Magnetic Moments Low Energies Sum Rule Hqeft Decay Meson Qcd
AbstractWe 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.
2006
ISSN0217-751X
Volume21Issue:19-20Pages:3947-3966
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5929
Collection理论物理所科研产出_SCI论文
Corresponding AuthorKumar, KBV , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
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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