What question did this study set out to answer?

The aim is to identify the physics behind electroweak symmetry breaking using a quasi-model-independent approach.

October 11, 2000Open Access

Search for new physics ineμXdata at DØ using SLEUTH: A quasi-model-independent search strategy for new physics

BAB. AbbottOklahoma State University MAM. AbolinsUniversidade Federal do Rio de Janeiro VAV. AbramovKurchatov Institute

Key Points

The aim is to identify the physics behind electroweak symmetry breaking using a quasi-model-independent approach.
Defined final states for analysis and created a rule to select relevant variables.
Developed the SLEUTH algorithm to find excess regions in selected variables.
Analyzed data from 108 pb^(-1) of p p collisions at a center-of-mass energy of 1.8 TeV.
No evidence of new high pT physics was found in the analyzed sample of eμX data.
The sensitivity of the SLEUTH method was successfully demonstrated.

Abstract

We present a quasi-model-independent search for the physics responsible for electroweak symmetry breaking. We define final states to be studied, and construct a rule that identifies a set of relevant variables for any particular final state. A new algorithm (``SLEUTH'') searches for regions of excess in those variables and quantifies the significance of any detected excess. After demonstrating the sensitivity of the method, we apply it to the semi-inclusive channel e collected in 108 pb^-1 of pp collisions at s=1. 8 TeV at the D experiment during 1992--1996 at the Fermilab Tevatron. We find no evidence of new high pₓ physics in this sample.

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