
%0 Journal Article
%A Jameson, I 
%A Rawlinson, AA 
%A Thomas, AW 
%T The Sigma Term: Leading Non-Analytic Behaviour Of Decuplet Contributions
%J Australian Journal of Physics
%D 1994/02/01
%V 47
%N 1
%P 45-48
%K 
%R https://doi.org/10.1071/PH940045
%U https://www.publish.csiro.au/paper/PH940045 
%X We examine the analytic structure, in powers of the quark mass (m), of the chiral loop corrections to the pion-nucleon sigma term arising from coupling to the lowest mass baryon decuplet. The leading non-analytic term is found to go like m2 In(m/2a) (with a the delta-nucleon mass splitting), and to be quite significant numerically. 
