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Scientific article
English

A search for prompt lepton-jets in pp collisions at √s = 7 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 719, no. 4-5, p. 299-317
Publication date2013
Abstract

We present a search for a light (mass <2GeV) boson predicted by Hidden Valley supersymmetric models that decays into a final state consisting of collimated muons or electrons, denoted “lepton-jets”. The analysis uses 5fb−1 of √s=7TeV proton–proton collision data recorded by the ATLAS detector at the Large Hadron Collider to search for the following signatures: single lepton-jets with at least four muons; pairs of lepton-jets, each with two or more muons; and pairs of lepton-jets with two or more electrons. This study finds no statistically significant deviation from the Standard Model prediction and places 95% confidence-level exclusion limits on the production cross section times branching ratio of light bosons for several parameter sets of a Hidden Valley model.

Citation (ISO format)
ATLAS Collaboration. A search for prompt lepton-jets in <em>pp</em> collisions at √s = 7 TeV with the ATLAS detector. In: Physics letters. B, 2013, vol. 719, n° 4-5, p. 299–317. doi: 10.1016/j.physletb.2013.01.034
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ISSN of the journal0370-2693
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