Measurement of the High-Mass Drell-Yan Cross Section and Limits on Quark-Electron Compositeness Scales

摘要

We present a measurement of the Drell-Yan cross section at high dielectroninvariant mass using 120/pb of data collected in pbar-p collisions at sqrt(s) =1.8 TeV by the D0 collaboration during 1992-96. No deviation from standardmodel expectations is observed. We use the data to set limits on the energyscale of quark-electron compositeness with common constituents. The 95%confidence level lower limits on the compositeness scale vary between 3.3 TeV and 6.1 TeV depending on the assumed form of the effective contactinteraction.