Search for leptoquark-like signatures with the ATLAS and CMS detectors

The most recent results from searches of leptoquark-like signatures are presented using 1.03 and 4.7 fb(-1) of pp collision data collected by the ATLAS detector with root s = 7 TeV and 19.6 fb(-1) of pp collision data collected by the CMS detector with root s = 8 TeV at the LHC. First- and second-generation scalar leptoquarks are looked for in the final states with either two leptons and two jets (ll + jj, l = e, mu) or one lepton, missing transverse energy, and two jets (l nu + jj, l = e, mu). Apart from leptoquark investigations, the ll + jj final states are further studied in a search for W bosons with right-handed couplings that arise in left-right models. Third-generation scalar leptoquarks are looked for in the final state with two tau leptons and two b quarks or two top quarks (tau tau + bb and tau tau + tt). The tau tau + bb final state is also sensitive to stop pairs decaying through R-parity violating and conserving processes that are foreseen in some models of supersymmetry. In addition, results are shown for third-generation scalar leptoquarks in the final states bb + nu nu and tt + nu nu, reinterpreting searches for bottom and top squark pair production. 95% confidence level upper limits are set on the scalar leptoquark pair production cross section times branching fraction in each decay channel as a function of the leptoquark mass and the branching ratio of decay.