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Showing 1 to 6 of 6 for “"dileptons"”.
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A search for top quarks in PP collisions using dileptons
A search for tt pairs in pp collisions with a center of mass energy ,fS = l.STeV is presented. The analysis looks for ti pairs which decayed through the chain ti -+ w+ bW-b -+ f+z;bf-vb where one of the b quarks is explicitly identified. In a sample of 109.4 ± 7.2 pb-1 of data, 6 tags in 4 events …
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A search for top quarks in proton-antiproton collisions using dileptons
A search for tt pairs in pp collisions with a center of mass energy $\sqrt s$ = 1.8TeV is presented. The analysis looks for tt pairs which decayed through the chain $\bar {tt}\to W\sp+bW\sp-\bar b\to\ell\sp+\bar \nu b\ell\sp-\nu\bar b$ where one of the b quarks is explicitly identified. In a sample …
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Pre-equilibrium photon and dilepton production from the early stages of high-energy heavy-ion collisions
… their emission: these probes are photons and dileptons, also referred to as electromagnetic probes. Additionally, photons and dileptons are produced throughout the entire space-time evolution of a heavy-ion collision. Thus, understanding them in the context of a thermalizing QGP allows for …
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A search for the Higgs boson in H->WW->lvlv with 8.2 fb-1
… events having final states with either same-sign dileptons or trileptons With the combination of the separate analyses, we observed a 95% C.L. upper production limit of 0.77 times the SM expectation for a Higgs mass of 165 GeV/c2 to be compared with the value for the median of the expected limit …
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Topics in the generalized vector dominance model
… approach predicts a greater production of dileptons. We compare the model to the limited dilepton data that are presently available and also integrate over one of the leptons to study the contributions to the single-lepton yield. Without the benefit of some very recent data we find that the …
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Observation of upsilon suppression, search for long-lived particles, and observation of B0s → micro + micro-- at the LHC with the CMS experiment
… neutral bosons, each of which decays to dileptons. In the second, events contain a pair of squarks that each decay to a long-lived neutralino, each of which in turn decays to dileptons and a neutrino. We performed the search with the CMS tracker and muon system separately and combined the …