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Search for supersymmetry with like-sign lepton-tau events at CDF.
Phys Rev Lett
May 2013
Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
We present a search for chargino-neutralino associated production using like electric charge dilepton events collected by the CDF II detector at the Fermilab Tevatron in proton-antiproton collisions at sqrt[s] = 1.96 TeV. One lepton is identified as the hadronic decay of a tau lepton, while the other is an electron or muon.
View Article and Find Full Text PDFSearch for new physics in high pT like-sign dilepton events at CDF II.
Phys Rev Lett
October 2011
Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014 Helsinki, Finland.
We present a search for new physics in events with two high pT leptons of the same electric charge, using data with an integrated luminosity of 6.1 fb(-1). The observed data are consistent with standard model predictions.
View Article and Find Full Text PDFInclusive search for new physics with like-sign dilepton events in pp collisions at square root of s =1.96 TeV.
Phys Rev Lett
June 2007
University of Illinois, Urbana, Illinois 61801, USA.
We describe a search for anomalous production of events with two leptons (e or mu) of the same electric charge in pp[over ] collisions at a center-of-mass energy of 1.96 TeV. Many extensions to the standard model predict the production of two leptons of the same electric charge.
View Article and Find Full Text PDFSignatures for Majorana neutrinos at hadron colliders.
Phys Rev Lett
October 2006
Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA.
The Majorana nature of neutrinos may only be experimentally verified via lepton-number violating processes involving charged leptons. We explore the Delta L = 2 like-sign dilepton production at hadron colliders to search for signals of Majorana neutrinos. We find significant sensitivity for resonant production of a Majorana neutrino in the mass range of 10-80 GeV at the current run of the Tevatron with 2 fb(-1) integrated luminosity and in the range of 10-400 GeV at the CERN LHC with 100 fb(-1).
View Article and Find Full Text PDFSearch for gluinos and squarks using like-sign dileptons in pp macro collisions at square root of s = 1.8 TeV.
Phys Rev Lett
December 2001
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
We present results of the first search for like-sign dilepton ( e(+/-)e(+/-), e(+/-)mu(+/-), mu(+/-)mu(+/-)) events associated with multijets and large missing energy using 106 pb(-1) of data in pp macro collisions at square root of s = 1.8 TeV collected during 1992-1995 by the CDF experiment. Finding no events that pass our selection, we examine pair production of gluinos (tilde g) and squarks (tilde q) in a constrained framework of the minimal supersymmetric standard model.
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