Nucleon polarizabilities in the perturbative chiral quark model

Y. Dong, Amand Faessler, Th Gutsche, J. Kuckei, V. E. Lyubovitskij, K. Pumsa-Ard, P. Shen

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Abstract

The nucleon polarizabilities α_E and β_M are studied in the context of the perturbative chiral quark model. We demonstrate that meson-cloud effects are sufficient to explain the electric polarizability of the nucleon. Contributions of excited quark states to the paramagnetic polarizability are dominant and cancel the diamagnetic polarizability arising from the chiral field. The obtained results are compared to data and other theoretical predictions.

Original language	English
Pages (from-to)	203-220
Number of pages	18
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	32
Issue number	2
DOIs	https://doi.org/10.1088/0954-3899/32/2/011
Publication status	Published - 1 Feb 2006
Externally published	Yes

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ASJC Scopus subject areas

Physics and Astronomy(all)
Nuclear and High Energy Physics

Cite this

Dong, Y., Faessler, A., Gutsche, T., Kuckei, J., Lyubovitskij, V. E., Pumsa-Ard, K., & Shen, P. (2006). Nucleon polarizabilities in the perturbative chiral quark model. Journal of Physics G: Nuclear and Particle Physics, 32(2), 203-220. https://doi.org/10.1088/0954-3899/32/2/011

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AU - Gutsche, Th

AU - Kuckei, J.

AU - Lyubovitskij, V. E.

AU - Pumsa-Ard, K.

AU - Shen, P.

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N2 - The nucleon polarizabilities αE and βM are studied in the context of the perturbative chiral quark model. We demonstrate that meson-cloud effects are sufficient to explain the electric polarizability of the nucleon. Contributions of excited quark states to the paramagnetic polarizability are dominant and cancel the diamagnetic polarizability arising from the chiral field. The obtained results are compared to data and other theoretical predictions.

AB - The nucleon polarizabilities αE and βM are studied in the context of the perturbative chiral quark model. We demonstrate that meson-cloud effects are sufficient to explain the electric polarizability of the nucleon. Contributions of excited quark states to the paramagnetic polarizability are dominant and cancel the diamagnetic polarizability arising from the chiral field. The obtained results are compared to data and other theoretical predictions.

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Access to Document

10.1088/0954-3899/32/2/011