A search for prompt lepton-jets in pp collisions at root s=7 TeV with the ATLAS detector
2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 719, no 4-5, 299-317 p.Article in journal (Refereed) Published
We present a search for a light (mass < 2 GeV) 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 5 fb(-1) of root s = 7 TeV 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.
Place, publisher, year, edition, pages
2013. Vol. 719, no 4-5, 299-317 p.
IdentifiersURN: urn:nbn:se:uu:diva-198496DOI: 10.1016/j.physletb.2013.01.034ISI: 000315316900008OAI: oai:DiVA.org:uu-198496DiVA: diva2:616344
ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1016/j.physletb.2013.01.0342013-04-162013-04-162014-06-23Bibliographically approved