A Search for Higgs Bosons in Final States with Multiple Tau Leptons at the DØ Experiment

Abstract

Two searches for the production of Higgs bosons decaying into tau and mu leptons, using data collected withthe DZero detector at the Fermilab Tevatron p-bar(p)collider, are presented. A search for the pair production of doubly charged Higgs bosons in the processq-bar(q) to H^{++}H^{--}, where H^{++} decays to tau-tau, mu-mu or tau-mu lepton pairs, with an integrated luminosity of up to L= 7.0 fb^{-1}, is presented. No significantexcess of data over the expected SM background is observed and the results are usedto set 95\% C.L. limits on the pair production cross section of doubly charged Higgs bosons in the range 90 < M_{H^{++}} < 200 GeV. A second search for the production of theStandard Model Higgs boson in the finalstate tau-tau-mu+X is presented, using an integratedluminosity of L=8.6 fb^{-1}. Again no significantexcess of data is observed over the backgroundexpectation and 95% C.L. limits are set on the observed cross sectionrelative to the Standard Model prediction, in the range 100 < M_{H} < 200 GeV.