Author/Authors :
Guiducci، نويسنده , , S.، نويسنده ,
Abstract :
In 1999 two B-factories, PEP-II and KEK, and a Φ-factory, DAΦNE, started their physics experiments. A status report of the three factories is presented. A description of the interaction regions, strongly influenced by the detector requirements, and of the machine background in the detectors is presented.
