Abstract:
We present a measurement of the Drell-Yan cross section at
high dielectron invariant mass using 120 pb -1 of data
collected in pp-bar collisions at sqrt[s] = 1.8 TeV by the
D0 Collaboration during 1992-1996. No deviation from
standard model expectations is observed.
We use the data to set limits on the quark-electron
compositeness scale. The 95% confidence level lower limits
on the compositeness scale vary between 3.3 and 6.1 TeV
depending on the assumed form of the effective contact
interaction.