INVESTIGADORES
ALONSO Francisco
artículos
Título:
Search for a heavy narrow resonance decaying to eμ, eτ, or μτ with the ATLAS detector in s√=7 TeV pp collisions at the LHC
Autor/es:
ATLAS COLLABORATION (AAD G, ALONSO FRANCISCO, ET. AL.)
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 p. 15 - 32
ISSN:
0370-2693
Resumen:
This Letter presents the results of a search for a heavy particle decaying into an e^+/-@m^@?, e^+/-@t^@?, or @m^+/-@t^@? 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^-^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@m, e@t, and @m@t modes, respectively. These results considerably extend constraints from Tevatron experiments. 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 sqrt(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. 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. These results considerably extend constraints from Tevatron experiments.