CHIRAL ANOMALY AND UNAMBIGUOUS TERMS OF EXACT SCALE BEHAVIOR

We perform new explicit and regularization-independent calculations of < AV > amplitude in QED1+1 and < AVV > amplitude in QED1+3 respective ly to reinvestigate the anomaly problem. A kind of finite and unambigu ous terms of exact scale behavior (in momentum space) is found to be r esponsible for the anomalies both in QED1+1 and QED1+3. They come from logarithmically divergent momentum integrals in contrast with the usu al knowledge for triangle anomaly in QED1+3. In QED1+1, this term is a lso responsible for photon mass generation. Some implications and poss ible relations with other aspects of anomaly are discussed.