A Search for New Physics with High Mass Tau Pairs in PPbar Collisions at sqrt(s)=1.96 TeV at CDF

Details A Search for New Physics with High Mass Tau Pairs in PPbar Collisions at sqrt(s)=1.96 TeV at CDF A Search for New Physics with High Mass Tau Pairs in PPbar Collisions at sqrt(s)=1.96 TeV at CDF

2005-04-29

arxiv.org/abs/hep-ex/0504060v2

Physics

High Energy Physics

High Energy Physics - Experiment

Ph.D. thesis, Rutgers University, 173 pages, advisor: John Conway

Scientific paper

We present the results of a search for new particles decaying to tau pairs using the data corresponding to an integrated luminosity of 195 pb^-1 collected from March 2002 to September 2003 with the CDF detector at the Tevatron. Hypothetical particles, such as Zprime and MSSM Higgs bosons can potentially produce the tau pair final state. We discuss the method of tau identification, and show the signal acceptance versus new particle mass. The low-mass region, dominated by Z -> tau tau, is used as a control region. In the high-mass region, we expect 2.8 +/- 0.5 events from known background sources, and observe 4 events in the data sample. Thus no significant excess is observed, and we set upper limits on the cross section times branching ratio as a function of the masses of heavy scalar and vector particles.

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