Search for Contact Interactions in the Dimuon Final State at ATLAS

Details Search for Contact Interactions in the Dimuon Final State at ATLAS Search for Contact Interactions in the Dimuon Final State at ATLAS

2009-10-18

arxiv.org/abs/0910.3384v2

Physics

High Energy Physics

High Energy Physics - Experiment

To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726

Scientific paper

The Standard Model has been successful in describing many fundamental aspects of particle physics. However, there are some remaining puzzles that are not explained within the context of its present framework. We discuss the possibility to discover new physics in the ATLAS Detector via a four-fermion contact interaction, much in the same way Fermi first described Weak interactions. Using a simple ratio method on dimuon events, we can set a 95% C.L. lower limit on the effective scale Lambda = 7.5 TeV (8.7 TeV) for the constructive Left-left Isoscalar Model of quark compositeness with 100 pb^-1 (200 pb^-1) of data at sqrt{s} = 10 TeV.

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