Introduction

The recent discoveries of scaling violation and narrow resonances in deep inelastic annihilation (see review of data by Gilman 1975) have raised the possibility that electrons may undergo non-electromagnetic interactions with hadrons (Bigi and Bjorken 1974; Chanda 1974; Greenberg and Yodh 1974; Pati and Salam 1974a, 1974b; Richter 1974; Soni 1974a, 1974b; Wolfram 1975). In the low energy limit , it is well known that electrons obey quantum electrodynamics (QED) to considerable accuracy, and hence in this region the strength of any anomalous electron-hadron coupling must be negligible. At higher energies , however, the predictions of QED fail, and scaling is violated. In electron-nucleus interactions, there is also scaling in the low energy region , but this ceases as the electrons probe the nucleon form factors and induce free pion production (Chanowitz and Drell 1973). In the hadronic electron model presented here, scaling is broken by a similar process.

previous  l  next