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Author Pascalutsa, Vladimir
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2009-10-20
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Nuclear Theory ♦ High Energy Physics - Phenomenology ♦ physics:hep-ph ♦ physics:nucl-th
Abstract Several conceptual points concerning the inclusion of the $\Delta$(1232) resonance in the framework of chiral effective-field theory are discussed, with an emphasis on the problem of power counting in the baryon sector in general. I also formulate a new dispersion relation in the pion-mass squared (or, the quark mass) and make a link between the power counting and the analytic properties of chiral expansion. A controversy regarding the determination of the proton's magnetic polarizability from Compton-scattering data is stressed here as well.
Description Reference: PoS CD09:095,2009
Educational Use Research
Learning Resource Type Article
Page Count 10


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