Off-campus UMass Amherst users: To download dissertations, please use the following link to log into our proxy server with your UMass Amherst user name and password.
Non-UMass Amherst users, please click the view more button below to purchase a copy of this dissertation from Proquest.
(Some titles may also be available free of charge in our Open Access Dissertation Collection, so please check there first.)
Heavy baryon chiral perturbation theory with light deltas
Abstract
We demonstrate how the heavy baryon method, previously applied to chiral perturbation theory calculations involving the interactions of nucleons and pions, can be generalized to include interactions with the first nucleon resonance--$\Delta$(1232). The formalism is developed in terms of a small scale $\delta$ expansion, which refers to soft momenta, the pion mass and the nucleon-delta mass splitting $\Delta$ = $M\sb{\Delta} - M\sb{N}$. First applications of this chiral theory are presented, in particular the calculation of mass and wavefunction renormalization, threshold neutral pion photoproduction, and forward Compton scattering.
Subject Area
Nuclear physics|Particle physics
Recommended Citation
Hemmert, Thomas Robert, "Heavy baryon chiral perturbation theory with light deltas" (1997). Doctoral Dissertations Available from Proquest. AAI9809346.
https://scholarworks.umass.edu/dissertations/AAI9809346