Wave function renormalization in heavy baryon chiral perturbation theory

Abstract

We establish exact relations between relativistic form factors and amplitudes for single-baryon processes and the corresponding quantities calculated in the framework of heavy baryon chiral perturbation theory. A crucial ingredient for the proper matching is the first complete treatment of baryon wave function renormalization in heavy baryon chiral perturbation theory.

14 pages, Latex. Final version to appear in Phys. Lett. B: relation between relativistic and HBCHPT Green functions is made more explicit; equations, results and conclusions are unchanged