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| Total Pages | : 16 |
| Release | : 1993 |
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A set of jet events with large amount of Missing E{sub Tau} from the Fermilab CDF experiment was analyses to search for SUSY signature. No significant signals were observed above the Standard Model background. Some effects of some SUSY parameters on the squark and gluino mass limits are presented.
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| Release | : 2005 |
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We have searched supersymmetry (SUSY) using trilepton events in p[bar p] collisions at [radical]s = 1.8 TeV. In the Minimal Supersymmetric Standard Model (MSSM), trilepton events are expected from chargino-neutralino ([tilde [chi]][sub 1][sup [plus-minus]][tilde [chi]][sub 2][sup o]) pair production, with subsequent decay into leptons. In all possible combinations of electron and muon channels in 19 pb[sup [minus]1]data, we observe no events which pass our trilepton selection criteria. Assuming the GUT hypothesis within the framework of the MSSM, our preliminary analysis excludes M([tilde [chi]][sub 1][sup [plus-minus]][tilde [chi]][sub 2][sup o])
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| Release | : 1995 |
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| Total Pages | : 11 |
| Release | : 1996 |
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We present recent results of supersymmetric (SUSY) particle searches at the Collider Detector at Fermilab. These include searches for squarks, gluinos, charginos, and neutralinos using the {ital E}{sub T}-multijet, like-sign dilepton, and trilepton SUSY signatures. Results from a charged Higgs search using the hadronic decays of the tau lepton are also presented.
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| Release | : 2000 |
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Events with signatures involving large missing transverse energy (E{sub T}) are among the quintessential search modes for R-parity conserving supersymmetry. CDF has conducted two recent analyses for supersymmetry which use E{sub T} and jets. The E{sub T} and monojet signature is employed to determine process independent limits for the production of new physics beyond the Standard Model and then applied to models of spontaneous breaking of supersymmetry to determine limits on the supersymmetry breaking parameter and the gravitino mass. Direct searches for scalar top and scalar bottom quarks within the framework of supersymmetric models are performed using a signature of E{sub T} and two heavy flavor jets. Since the data is found to be consistent with Standard Model expectations, limits are determined in the mass planes m({tilde {chi}}1°)-m({tilde t}1) and m({tilde {chi}}1)°-m({tilde b}1).
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| Total Pages | : 3 |
| Release | : 2009 |
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New results are presented in testing Supersymmetry at the Tevatron using photonic final states and searching for long-lived neutral and charged particles.
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| Total Pages | : 25 |
| Release | : 1990 |
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Searches for the top quark in p{bar p} collisions at (square root)s = 1.8 TeV are described. The analyses are based on data with an integrated luminosity of 4.4 pb−1 recorded with the Collider Detector at Fermilab in the 1988--1989 run. An upper limit on the t{bar t} cross section is obtained. The top quark with mass below 89 GeV/c2 is excluded at the 95% CL. Prospects for searches for the top quark in the future are presented. We also briefly present results on searches for supersymmetric particles. 14 refs., 10 figs.
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| Total Pages | : 16 |
| Release | : 1998 |
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We present results of recent searches for new physics using the CDF detector at the Fermilab Tevatron. Presented are searches for Higgs →??, as well as more general searches in?? + X where X is /E{sub T}, jets, charged leptons, b-quarks or extra photons. The CDF ee??/E{sub T} candidate event is discussed along with estimates of the expected rates in the Standard Model. Other searches for SUSY, Higgs and Technicolor look for particles which decay to vector bosons and b-quarks.
| Author | : Pran Nath |
| Publisher | : World Scientific |
| Total Pages | : 646 |
| Release | : 1993-11-22 |
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| ISBN | : 9814552232 |
The recent high precision results from the LEP supercollider at CERN appear favorable for supergravity unification of the electroweak and the strong forces. The proceedings of the SUSY 93 Workshop focus on further precise predictions of unification which may be observed in the laboratory. In addition, the proceedings cover a wide range of other topics in supersymmetry, supergravity, particle physics, string theory and cosmology and their interconnections. They include both theoretical and experimental papers, hence presenting a complete and comprehensive picture of this important subject.
| Author | : Yutaro Iiyama |
| Publisher | : Springer |
| Total Pages | : 182 |
| Release | : 2017-06-14 |
| Genre | : Science |
| ISBN | : 3319586610 |
This Ph.D. thesis is a search for physics beyond the standard model (SM) of particle physics, which successfully describes the interactions and properties of all known elementary particles. However, no particle exists in the SM that can account for the dark matter, which makes up about one quarter of the energy-mass content of the universe. Understanding the nature of dark matter is one goal of the CERN Large Hadron Collider (LHC). The extension of the SM with supersymmetry (SUSY) is considered a promising possibilities to explain dark matter. The nominated thesis describes a search for SUSY using data collected by the CMS experiment at the LHC. It utilizes a final state consisting of a photon, a lepton, and a large momentum imbalance probing a class of SUSY models that has not yet been studied extensively. The thesis stands out not only due to its content that is explained with clarity but also because the author performed more or less all aspects of the thesis analysis by himself, from data skimming to limit calculations, which is extremely rare, especially nowadays in the large LHC collaborations.
