Standard QCD sum-rule analyses of the nucleon mass give results that are inconistent with chiral perturbation theory due to an overly simple continuum ansatz on the phenomenological side of the sum rule. We show that a careful treatment of the continuum, including π-N states and other states with virtual pions, resolves the inconsistency associated with chiral logs.
Bibliographical noteFunding Information:
SHL, TDC. and DKG thank tbr !nctitllt* for >!r: clear Theory at the University of Washington for its hospitality. SHL and TDC’also thank the Department of Physics at the University of Washington. The work of SHL and SC was supported by the Basic Science Research Institute program of the Korean Ministry of Education through Grant No. BSRI-94-2425, by KOSEF through the CTP at Seoul National University, and by a Yonsei University Research Grant. The work of TDC and DKG was supported by the U.S. Department of Energy through Grant No. DE-FGO2-93ER-40762. The work of TDC was also supported by the U.S. National Science Foundation through Grant No. PHY-9058487.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics