2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 5, 701-703
DOI 10.1007/s100529800882

Hara's theorem, quark model,
and $\bf\gamma _5$-dependent renormalization constants

P. Zenczykowski

Department of Theoretical Physics, Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland
(e-mail: zenczyko@solaris.ifj.edu.pl)

Received: 12 November 1997 / Revised version: 17 February 1998 / Published online: 9 April 1998

Abstract
We discuss the applicability of $\gamma _5$-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 $\gamma _5$-dependent renormalization does not provide a proper way for a hadron-level understanding of the violation of Hara's theorem observed in the quark model.


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