Search for Contact Interactions in Dimuon Events from pp Collisions at sqrt(s) = 7 TeV with the ATLAS Detector

Abstract

A search for contact interactions has been performed using dimuon events recorded with the ATLAS detector in proton-proton collisions at sqrt(s) = 7 TeV. The data sample corresponds to an integrated luminosity of 42 pb-1. No significant deviation from the Standard Model is observed in the dimuon mass spectrum, allowing the following 95% C.L. limits to be set on the energy scale of contact interactions: Lambda > 4.9 TeV (4.5 TeV) for constructive (destructive) interference in the left-left isoscalar compositeness model. These limits are the most stringent to date for mumuqq contact interactions.

5 pages plus author list (18 pages total), 2 figures, 2 tables, submitted to Phys. Rev. D Rapid Communications

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• Search for excited leptons in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• A search for excited leptons in pp Collisions at sqrt(s) = 7 TeV
• Search for contact interactions in opposite-sign dimuon events in pp collisions at sqrt(s) = 7 TeV