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Письма в Журнал экспериментальной и теоретической физики, 2009, том 89, выпуск 3, страницы 127–132
(Mi jetpl349)
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Эта публикация цитируется в 17 научных статьях (всего в 17 статьях)
ПОЛЯ, ЧАСТИЦЫ, ЯДРА
Manifestly-covariant $p^3$ calculation of nucleon Compton scattering
V. Lenskyab, V. Pascalutsaac a European Centre for Theoretical Studies in Nuclear Physics and
Related Areas
b Institute for Theoretical and Experimental Physics, 117218 Moscow,
Russia
c Institut für Kernphysik, Johannes Gutenberg Universität, Mainz D-55099, Germany
Аннотация:
We compute the Compton scattering off the nucleons in the framework of manifestly covariant baryon chiral perturbation theory (B$\chi$PT). The results for observables differ substantially from the corresponding calculations in heavy-baryon chiral perturbation theory (HB$\chi$PT), most appreciably in the forward kinematics. We verify that the covariant $p^3$ result fulfills the forward-Compton-scattering sum rules. We also explore the effect of the $\Delta$(1232) resonance at order $p^4/\Delta$, with $\Delta\approx300$ MeV, the resonance excitation energy. We find that the substantial effect of the $\Delta$-excitation on the nucleon polarizabilities can naturally be accommodated in the manifestly covariant calculation.
Поступила в редакцию: 05.11.2008
Образец цитирования:
V. Lensky, V. Pascalutsa, “Manifestly-covariant $p^3$ calculation of nucleon Compton scattering”, Письма в ЖЭТФ, 89:3 (2009), 127–132; JETP Letters, 89:3 (2009), 108–113
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl349 https://www.mathnet.ru/rus/jetpl/v89/i3/p127
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Страница аннотации: | 208 | PDF полного текста: | 84 | Список литературы: | 43 |
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