Faculty of Physics
University of Vienna
Prof. Helmuth Hüffel



November 27 - 29, 2009





Maria de los Angeles Hernandez-Ruiz (San Luis Potosí):


Renormalization of the baryon axial vector current in large-Nc chiral perturbation theory



The baryon axialvector current is computed at one-loop order in heavy baryon chiral perturbation theory in the large-Nc limit, where Nc is the number of colors. Loop graphs with octet and decuplet intermediate states cancel to various orders in Nc as a consequence of the large-Nc spin-flavor symmetry of QCD baryons. We present a preliminary study of the convergence of the chiral expansion with 1/Nc corrections in the case of gA = Nc = 3.






(last updated: 29/10/2009)

http://www.univie.ac.at/vienna.seminar /  2008,  E-mail: vienna.theor-physik@univie.ac.at