Hara's theorem, quark model, and (gamma)(sub 5)-dependent renormalization constants

摘要

We discuss the applicability of (gamma)(sub 5)-dependent field renormalization as a means of renormalizing away the apparent violation of Hara's theorem observed in the quark model. It is pointed out that a result totally analogous to the violation of Hara's theorem is predicted by the quark model also for neutral baryons. For neutral baryons, however, such a result cannot be renormalized away. This proves that (gamma)(sub 5)-dependent renormalization does not provide a proper way for a hadron-level understanding of violation of Hara's theorem observed in the quark model. (author)