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Search for a heavy narrow resonance decaying to e mu, e tau, or mu tau with the ATLAS detector in root s=7 tev pp collisions at the LHC
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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2013 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 723, no 1-3, 15-32 p.Article in journal (Refereed) Published
Abstract [en]

This Letter presents the results of a search for a heavy particle decaying into an e±μe±μ∓, e±τe±τ∓, or μ±τμ±τ∓ final state in pp collisions at s=7 TeV. The data were recorded with the ATLAS detector at the LHC during 2011 and correspond to an integrated luminosity of 4.6 fb−14.6 fb−1. No significant excess above the Standard Model expectation is observed, and exclusions at 95% confidence level are placed on the cross section times branching ratio for the production of an R-parity-violating supersymmetric tau sneutrino. For a sneutrino mass of 500 (2000) GeV, the observed limits on the production cross section times branching ratio are 3.2 (1.4) fb, 42 (17) fb, and 40 (18) fb for the , , and μτ modes, respectively. These results considerably extend constraints from Tevatron experiments.

Place, publisher, year, edition, pages
2013. Vol. 723, no 1-3, 15-32 p.
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Natural Sciences
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URN: urn:nbn:se:uu:diva-204153DOI: 10.1016/j.physletb.2013.04.035ISI: 000320206500003OAI: oai:DiVA.org:uu-204153DiVA: diva2:637786
Note

ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1016/j.physletb.2013.04.035

Available from: 2013-07-22 Created: 2013-07-22 Last updated: 2017-12-06Bibliographically approved

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Brenner, RichardBuszello, Claus P.Coniavitis, EliasEkelöf, TordEllert, MattiasFerrari, ArnaudIsaksson, CharliePelikan, Daniel
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