Forward analysis of πN scattering with an expansion method
نویسندگان
چکیده
منابع مشابه
Low energy analysis of πN → πN
We derive a representation for the pion nucleon scattering amplitude that is valid to the fourth order of the chiral expansion. To obtain the correct analytic structure of the singularities in the low energy region, we have performed the calculation in a relativistic framework (infrared regularization). The result can be written in terms of functions of a single variable. We study the correspon...
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We discuss the electromagnetic corrections to the πN scattering lengths generated by minimal e. m. coupling from a knowledge of the low energy expansion of the πN elastic scattering amplitude as well as from the nucleon and ∆ pole terms, all taken for purely strong interactions. We assume the heavy baryon limit; the e. m. and axial form factors and masses are assumed to have their empirical val...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2007
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2007-10460-0