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.

Comments: 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