Searching for H->WW(*) and Other Diboson Final States at CDF

Details Searching for H->WW(*) and Other Diboson Final States at CDF Searching for H->WW(*) and Other Diboson Final States at CDF

2007-06-14

arxiv.org/abs/0706.2200v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 5 figures, to appear in the proceedings of 42nd Rencontres de Moriond on Electroweak Interactions and Unified Theorie

Scientific paper

We report searches for standard model (SM) Higgs production decaying to WW(*) and continuum ZZ production in the two charged lepton and two neutrino final states. The data were collected with the CDF II detector at the Fermilab Tevatron and correspond to an integrated luminosity of 1.1^fb-1. In order to separate the processes contributing to the final state, event probabilities calculated using the leading order differential cross-sections were used to construct a likelihood ratio discriminant. The observed (median expected) 95% C.L. upper limit for sigma(H->WW^(*)) with 160 GeV/c^2 mass hypothesis is 1.3 (1.8) pb which corresponds to 3.4 (4.8) times the SM prediction at next-to-next-to-leading logarithmic level (NNLL) calculation. The significance of the observed ZZ signal is 1.9 sigma and the 95% C.L. upper limit is 3.4 pb which is consistent with the next-to-leading order (NLO) calculation of 1.4+/-0.1 pb.

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