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
2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 723, no 1-3, 15-32 p.Article in journal (Refereed) Published
This Letter presents the results of a search for a heavy particle decaying into an e(+/-)mu(+/-), e(+/-)tau(+/-), or mu(+/-)tau(+/-) final state in pp collisions at root 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(-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 e mu, e tau, and mu tau modes, respectively. These results considerably extend constraints from Tevatron experiments.
Place, publisher, year, edition, pages
2013. Vol. 723, no 1-3, 15-32 p.
number-nonconservation, gauge theories, leptons
IdentifiersURN: urn:nbn:se:kth:diva-137684DOI: 10.1016/j.physletb.2013.04.035ISI: 000320206500003ScopusID: 2-s2.0-84878165312OAI: oai:DiVA.org:kth-137684DiVA: diva2:679620
QC 201312162013-12-162013-12-162013-12-16Bibliographically approved