PARALLEL SESSION PAPERS: Session 6: Direct Searches for New PhysicsNo Access

Search for Compositeness in Dilepton Final States at DØ

For the DØ Collaboration.

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and

Subhendu Chakrabarti

Tata Institute of Fundemental Research, Mumbai, 400 005, India

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https://doi.org/10.1142/S0217751X05026340Cited by:0 (Source: Crossref)

Abstract

We report preliminary results of a search for substructure in quarks and leptons assuming a four-fermion contact interaction for dielectron pairs of large invariant mass. The search is based on dielectron data collected by the DØ detector in collisions at . The results agree well with predictions of the standard model and we obtain model-dependent lower limits at 95% confidence level on the compositeness scale of 3.6 to 9.1 TeV for different chiral models of the composite structure of quarks and electrons.

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